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Varicella complications

Serious complications from chickenpox include: Bacterial infections of the skin and soft tissues in children, including Group A streptococcal infections Infection of the lungs (pneumonia) Infection or swelling of the brain (encephalitis, cerebellar ataxia Complications of varicella zoster virus reactivation Varicella zoster virus (VZV) is an exclusively human neurotropic alphaherpesvirus. Primary infection causes varicella (chickenpox), after which virus becomes latent in ganglionic neurons along the entire neuraxis Vanicella (chickenpox) has long been considered a benign, inevitable disease of childhood. Complications are generally mild and rarely severe, and virtually every individual is infected by adulthood. Infection is associated, however, with a high risk of serious complications in certain high-risk groups, such as leukemic children. Concerns about the severity of varicella in this population have. The most frequent complications were neurologic, which were reported in 73 children (61.3%); cerebellitis was the leading diagnosis (n = 48), followed by encephalitis (n = 22), meningitis (n = 2), and central facial palsy (n = 1). A total of 46 (38.6%) infectious complications were identified

Rare complications of varicella include aseptic meningitis, transverse myelitis, Guillain-Barré syndrome, thrombocytopenia, hemorrhagic varicella, purpura fulminans, glomerulonephritis, myocarditis, arthritis, orchitis, uveitis, iritis, and hepatitis. The risk of complications from varicella varies with age More often than not, varicella pneumonia causes severe stress due to hypoxia and warrants a cesarean section delivery.29Spontaneous abortion and premature labor can also be seen as complications of varicella infection during pregnancy.25VZV infection in pregnant women either before or after birth can cause serious neonatal infection as well. Risks of a vaccine reaction Sore arm from the injection, fever, or redness or rash where the shot is given can happen after varicella vaccine. More serious reactions happen very rarely. These can include pneumonia, infection of the brain and/or spinal cord covering, or seizures that are often associated with fever But it can be serious and can lead to complications including: Bacterial infections of the skin, soft tissues, bones, joints or bloodstream (sepsis People with contraindications for varicella vaccine should not receive varicella vaccine, including anyone who: has a history of anaphylactic/anaphylactoid reaction to gelatin, neomycin, or any other component of the vaccine has blood dyscrasias, leukemia, lymphomas, or malignant neoplasms affecting bone marrow or the lymphatic syste

Rare complications of varicella in immunologically healthy hosts include encephalitis, myocarditis and pericarditis, pancreatitis, orchitis, bleeding diatheses, and nephritis VZV can also travel retrograde to produce meningoencephalitis, myelitis, and stroke. When these complications occur without rash, VZV-induced disease can be diagnosed by detection of VZV DNA or anti-VZV antibody in cerebrospinal fluid and treated with intravenous acyclovir The most common complication of varicella is a secondary bacterial infection of the chickenpox lesions typically caused by Staphylococcus aureu s or Streptococcus pyogenes, r esulting in skin infections such as impetigo, furunculosis, cellulitis, and erysipelas, as well as an infection of lymph nodes known as lymphadenitis. 1 Shingles is caused by the varicella-zoster virus — the same virus that causes chickenpox. After you've had chickenpox, the virus lies inactive in nerve tissue near your spinal cord and brain. Years later, the virus may reactivate as shingles. Shingles isn't a life-threatening condition, but it can be very painful

Patients with varicella can also present with central nervous system complications such as intracranial vasculitis due to post-varicella arteriopathy. This is an important risk factor for paediatric stroke. [7 Complications of chickenpox are rare in healthy children. The most common complication is where the blisters become infected with bacteria. A sign that the blisters have become infected is when the surrounding skin becomes red and sore. If you think that your child's blisters have become infected, contact your GP as the child may need a course of antibiotics

Chickenpox (Varicella) Complications CD

Learn about adult chickenpox, its symptoms, and potential complications. Although many people think of chickenpox as a childhood disease, adults are still susceptible Population-based data on vanicella complications are presented using information both from national sample surveys of hospitalizations and physician office visits and from reviews of medical records for all cases occurring within one community (Olmsted County, Minnesota) during a specified period. Acute cerebellar ataxia is the most common neurologic complication of varicella and occurs about. Complications of chickenpox may include the following conditions: Bacterial infection (usually affects skin and soft tissues Chickenpox is a highly contagious viral infection that causes an acute fever and blistered rash, mainly in children. The name may be derived from the French term for chickpea, chiche pois. Another theory is that the word 'chicken' was derived from a slang term for 'child'. Chickenpox is also known as varicella

Varicella in Normal Children Low risk of complications. Accounts for >90% of cases, 75% of all varicella hospitalizations, 70% of cases of encephalitis, 40% to 60% of all deaths, and virtually 100% of Reye Syndrome cases. Most common complication is secondary bacterial infection of cutaneous lesions If you are pregnant and have chickenpox (varicella) — a highly contagious viral infection that causes an itchy, blister-like rash — you and your baby might face serious health risks. If you develop chickenpox during pregnancy, you are at risk of complications such as pneumonia. For your baby, the risks depend on the timing

Complication rates were higher in older age groups and the type of complications more severe. Length of stay for complicated varicella was 3.1 times longer than for uncomplicated varicella and inpatient costs were 72% greater.ConclusionComplicated varicella has a substantial health and economic burden Chickenpox is a highly contagious illness caused by the varicella-zoster virus (VZV), a type of herpes virus. It is often a mild illness, characterized by an itchy rash on the face, scalp and trunk with pink spots and tiny fluid-filled blisters that dry and become scabs four to five days later. Serious complications, although rare, can occur. For people who are at high risk of complications from chickenpox, doctors sometimes prescribe medications to shorten the length of the infection and to help reduce the risk of complications. If you or your child are at high risk of complications, your doctor may suggest an antiviral drug such as acyclovir (Zovirax, Sitavig) Chickenpox, also known as varicella, is a highly contagious disease caused by the initial infection with varicella zoster virus (VZV). The disease results in a characteristic skin rash that forms small, itchy blisters, which eventually scab over. It usually starts on the chest, back, and face. It then spreads to the rest of the body. Other symptoms may include fever, tiredness, and headaches There were ten varicella pneumonia (one), of neonatal varicella (one), and of a ruptured mycotic aneurysm secondary to septicemia (one). This review demonstrates (1) a substantial occurrence of life-threatening complications of varicella in childhood, and (2) a need for prospective epidemiologic data on the incidence of complications to.

Chickenpox Facts: Diseases of the World - WorldAtlas

Varicella is an acute contagious disease that most commonly occurs in childhood. Although normally benign, varicella can occasionally develop into a more serious illness. Moreover, the infection can lead to serious complications, such as Staphylococcus aureus infections, otitis media, endocarditis, pneumonia, and rare central nervous system. Varicella zoster disease of the central nervous system: epidemiological, clinical, and laboratory features 10 years after the introduction of the varicella vaccine. J Infect Dis . 2011 Feb 1. 203. varicella; complications; epidemiology; Streptococcus pyogenes; The attenuated live varicella vaccine prevents most of the morbidity caused by primary varicella in children.1Therefore, universal immunisation at the age of 12-18 months is currently recommended in the USA.2 In Europe, routine vaccination against chickenpox has not become standard practice, despite the commercial availability. Varicella is generally self-limited and vesicles gradually develop crusts, which disappear over a period of 7-10 days. Individuals remain contagious until all lesions have crusted over. The disease is typically mild, but severe complications may arise, including bacterial infections (e.g. cellulitis, pneumonia) and neurological complications (e.

Aebi C, Ahmed A, Ramilo O. Bacterial complications of primary varicella in children. Clin Infect Dis. 1996 Oct. 23(4):698-705. . Higuchi S, Toichi E, Kore-eda S, et al. An adult case of Fournier's. Severe Disease Burden: Varicella Complications Virally mediated Bacterially mediated Neurological Pneumonia Pulmonary Sepsis Hemorrhagic Skin and soft tissue Congenital infection • More common at extremes of age and in persons with cellular immune deficiencies • However, most severe complications and deaths occur in healthy.

Varicella in children is usually self-limiting, although complications can be unpredictable, and long-lasting immunity follows once the patient recovers. Epidemics are also self-limiting because the high rate of transmission and disease-induced immunity deplete the pool of susceptible individuals 6 The chickenpox vaccine is a safe, effective way to prevent chickenpox and its possible complications. Symptoms. The itchy blister rash caused by chickenpox infection appears 10 to 21 days after exposure to the virus and usually lasts about five to 10 days

Complications of varicella zoster virus reactivatio

  1. Varicella primarily affects young children in temperate countries, whereas varicella tends to occur at a later age during adolescence and adulthood, presenting in severe form with frequent risks of complication and mortality in tropical countries.140, 141 Severe varicella infections during adolescence may result in greater numbers of VZVs.
  2. Complications, however, do occur, particularly in infants, pregnant women and other adults, and in immunocompromised individuals, including those with HIV.1, 2 Globally, on average, 4.2 million cases of severe varicella result in hospitalisation or death each year.2 Prior to widespread usage of vaccines against varicella in temperate high.
  3. Chickenpox often goes away on its own without any complications. Whether it's mild or severe, most people become immune to chickenpox after getting the disease or after receiving even one dose.
  4. Varicella-zoster virus is an exclusively human herpesvirus that causes chickenpox (varicella), becomes latent in cranial-nerve and dorsal-root ganglia, and frequently reactivates decades later.

Varicella: Complications and Costs American Academy of

  1. Complication rates were higher in older age groups and the type of complications more severe. Length of stay for complicated varicella was 3.1 times longer than for uncomplicated varicella and inpatient costs were 72% greater. Conclusion Complicated varicella has a substantial health and economic burden
  2. the varicella notifications compiled by the Department of Preventive Medicine at Al-Ain General Authority for Health Services [9]. All the notified cases were clinically diagnosed and reported by primary care clinic physicians. Varicella-associated complications were derived from an established hospital-based surveillance system and from the.
  3. Varicella-zoster virus causes varicella (chickenpox) on primary infection and herpes zoster upon reactivation. Varicella is generally mild, but there is an increased risk of complications in immunocompromised individuals and neonates if maternal varicella is temporally close to birth
  4. Chickenpox is a highly infectious disease that usually occurs during childhood. By adulthood, more than 90% of Americans have had chickenpox. Since the mid-1990s, most children have been vaccinated against the infection. The disease is caused by the varicella-zoster virus (VZV), a form of the herpes virus

Severe complications of varicella in previously healthy

Chickenpox can lead to severe complications, including bacterial infection of the skin from the lesions, swelling of the brain, and pneumonia. Once a person has had chickenpox, the virus can reactivate later in life to cause a painful condition called shingles, marked by a blistering rash. Adults are at greater risk for severe complications. A review of medical records at a tertiary hospital in southern Taiwan from June 1988 through May 1998 identified 136 children who had been hospitalized for varicella-related complications. Of the children, 83% (113/136) were healthy before the onset of varicella and 17% (23/136) had underlying illnesses Complications. Varicella is usually a mild disease; however complications can occur, most often in infants, adults, pregnant women and immunocompromised individuals. Complications can include infection of the skin, lungs (pneumonia) and brain (encephalitis). Varicella is a serious disease at any stage of pregnancy and the virus can cause. Complications include secondary bacterial infections of skin lesions, sometimes resulting in bacteremia/sepsis, pneumonia, cerebellar ataxia, encephalitis, and hemorrhagic conditions; rarely (about 1 in 40,000 varicella cases), these complications may result in death Complications from Chickenpox. Complications are most frequent in very young children and adults, particularly pregnant women or individuals with weakened immune systems. Individuals with cancer, HIV or on immune-suppressing medications are more at risk for complications from the chickenpox, including

Getting chickenpox while pregnant can cause anxiety and concern, but going to the doctor quickly and getting proper treatment can help prevent harmful consequences. Although varicella can cause serious complications for both mother and child, these instances are very rare and can usually be avoided through good medical care Varicella zoster virus (VZV) infection of intra- and extracranial arteries (VZV vasculopathy) may be associated with a granulomatous vasculitis characterized by vessel wall damage and transmural inflammation, with multinucleated giant cells and/or epithelioid macrophages. VZV vasculopathy has previously been called granulomatous angiitis, VZV. Varicella (chickenpox), one of the childhood exanthemas, is caused by the human alpha herpes virus, varicella zoster. Varicella-zoster virus (VZV) is an exclusively human virus. The incubation period is about 14 days (range 9 to 21 days). Varicella is characterised by fever, malaise, and a generalised pruritic, vesicular rash Chickenpox is a viral infection, which simply means that it's caused by a specific virus that spreads easily from person to person. Thanks to a highly effective vaccine for preventing chickenpox, the illness has become increasingly less common in the United States and other developed countries.People young and old do still get sick with chickenpox, however, and for some of them, the infection. Varicella is a highly contagious childhood disease. Generally benign, serious complications necessitating antibiotic use may occur. The objective of this study was to characterize the rate, appropriateness and patterns of real-world antibiotic prescribing for management of varicella-associated complications, prior to universal varicella vaccination (UVV) implementation

Pinkbook: Varicella CD

  1. ating varicella pneumonia [].Of the mortality related to chickenpox in England and Wales, 80% occurs in adults []
  2. Susceptible pregnant women are at risk for certain complications when they contract varicella. Approximately 10 to 20 percent of those infected with varicella develop pneumonia, a severe lung.
  3. Shingles is a rash with shooting pain. It usually shows up on just one side of your body. Learn more about shingles symptoms, causes, contagiousness, vaccine, diagnosis, and treatment
Chicken pox vaccine program 'clearly working' among

Varicella Pneumonia: Case Report and Review of a

The subjects were children who experienced (n=51) (n=50) varicella without complications, acquired papules for Sex Male 30 23 less than two days, range in aged from 2-14 years, Female 21 27 and never received varicella vaccination before be- Age (mean+SD; years) 7.0+2.7 7.6+3.1 ing enrolled to this study In 2021, the majority of adults aged 19 years and older with varicella were not up-to-date on their varicella vaccinations or had unknown vaccination status. Although individuals who have been vaccinated can still develop varicella, complete and timely vaccination remains the best way to prevent varicella and severe complications. 7 27 3 1. Adult Chickenpox. Varicella Vaccine. Chickenpox is a common illness caused by the varicella-zoster virus. Symptoms of chickenpox include fever and itchy spots or blisters all over the body. Care for chickenpox usually includes use of pain medications and topical treatments for the itchy rash, blisters, and scabs. In serious cases of varicella, antiviral drugs can alter the course of the illness. These are typically given early to people at highest risk of complications, including sick children and pregnant women. Complications Complications; Chickenpox infections in pregnancy; Neonatal chickenpox; Prevention; Prognosis; Synonyms: varicella, varicella zoster. Chickenpox is a highly infectious disease caused by the varicella-zoster virus. It is a DNA virus of the Herpesviridae family. Reactivation of the dormant virus after a bout of chickenpox leads to herpes zoster.

Chickenpox (Varicella) Vaccine Information Statement CD

  1. or skin infection) or in necrotizing fasciitis (flesh-eating bacteria), overwhel
  2. Chickenpox causes spots (a rash) and can make a child feel generally unwell. Treatment aims to ease symptoms until the illness goes. Full recovery is usual in children aged under 12 years. Serious complications are rare but are more likely to occur in children with a poor immune system, such as those on chemotherapy
  3. ated disease or die from varicella complications. 58. Acute varicella may be complicated by: 5
  4. Chickenpox is usually a self-limiting disease in healthy children. Complications include: Bacterial skin infection, most common in young children. Lung involvement, more common in adults. In pregnancy, severe maternal chickenpox and fetal varicella syndrome. In later pregnancy, varicella can result in neonatal chickenpox infection

Chickenpox - Symptoms and causes - Mayo Clini

  1. Varicella immunization should be a priority for people with cystic fibrosis because they are at increased risk of complications from varicella infection, which may cause a transient worsening of lung function. Two doses of univalent varicella vaccine may be given, at least 3 months apart. Chronic inflammatory disease
  2. Chickenpox is typically an unpleasant illness when you are pregnant, even without complications. It tends to be much more severe than the illness children get. In addition, about 1 in 10 pregnant women with chickenpox develop inflamed lungs (pneumonia). This is sometimes serious
  3. Complications are more common in adolescents, adults and immunocompromised people, who have higher rates of pneumonia, encephalitis and death. Congenital varicella syndrome is rare when infection occurs before the 13th or after the 20th week of gestation. The risk is approximately 2% when infection occurs at 13-19 weeks of gestation
  4. Potential Complications. Most cases of the chickenpox will pass but complications are possible. Pregnant women or people on immune-suppressing medications such as cancer and HIV patients, as well as very young children, are the most at risk for developing complications. These can include infections, pneumonia, and dehydration
  5. If you get chickenpox immediately before or right after birth (5 days before birth to 2 days after birth), your baby may have an increased risk for a serious infection called neonatal varicella. This infection can be life-threatening, but treatment is helping more babies survive

53.1 (H zoster with other central nervous system(CNS) complications), and 053.2 (H zoster withocular complications).Case definition consisted of historical or physical evidence of primary varicella or H zoster within 14 days of onset of a condition,whichrequiredhospitalisation,andt When severe, complications of chickenpox can include: Bacterial infections (affecting the skin, bones, joints, soft bodily tissues or bloodstream) Pneumonia. Dehydration. Encephalitis (inflammation of the brain) or cerebellar ataxia. Bleeding problems and blood stream infections (sepsis) Toxic shock syndrome

Chickenpox complications and risks. Healthy children mostly have an itchy rash but no other complications. Rarely, chickenpox sores can get infected with bacteria. The bacteria can go on to cause other diseases like pneumonia and encephalitis. There are some children who are at high risk if they come into contact with chickenpox During the 13-year period, 84 children with varicella-related neurologic complications were admitted. Following full coverage in 2004, the rate of admissions for VZV-related CNS complications fell by more than 50%. Only 5% of children had documentation of having received varicella vaccine, although 82% of unvaccinated patients were eligible complications of varicella in the pregnant mother rather than to protect the fetus. Susceptible pregnant women are at risk for associated complications when they contract varicella. Varicella causes severe maternal morbidity, and 10%-20% of infected women develop varicella pneumonia, with mortality reported as high as 40%

Varicella Vaccine Recommendations CD

with average cases of chickenpox are uncomfortable and need to be kept out of daycare or school for a week or more. What are possible complications from chickenpox? The most common complication is bacterial infection of the skin or other parts of the body including the . bones, lungs, joints, and blood. The virus can als Varicella-zoster is a herpes virus that causes chickenpox, a common childhood illness. It is highly contagious. If an adult develops chickenpox, the illness may be more severe. After a person has had chickenpox, the varicella-zoster virus can remain inactive in the body for many years. Herpes zoster (shingles) occurs when the virus becomes.

Chickenpox (Varicella) - Definition, Causative organism

Severe Complications of Varicella in Previously Healthy

Primary varicella zoster virus infection results in chickenpox (varicella), which may result in complications including encephalitis, pneumonia (either direct viral pneumonia or secondary bacterial pneumonia), or bronchitis (either viral bronchitis or secondary bacterial bronchitis). Even when clinical symptoms of chickenpox have resolved, VZV remains dormant in the nervous system of the. Shingles is a fairly common condition caused by varicella-zoster, the same virus that causes chickenpox.According to the National Foundation for Infectious Diseases, 1 in 3 adults in the United. The automated records of over 250,000 members of a health maintenance organization were analyzed to assess the epidemiology of varicella and its complications between 1 July 1990 and 30 June 1992. All complications were verified by review of full-text medical records. The incidence rates of. Chickenpox is a disease caused by the varicella zoster virus and is often associated with childhood. Symptoms include an itchy rash, fever, and stomachache. Shingles is a condition of adulthood that happens when the virus becomes active again. Vaccines are available. Appointments & Access

Vesicular and Pustular Skin Disease Non-bacterial at Touro

Neurological complications of varicella zoster virus

Varicella vaccine, also known as chickenpox vaccine, is a vaccine that protects against chickenpox. One dose of vaccine prevents 95% of moderate disease and 100% of severe disease. Two doses of vaccine are more effective than one. If given to those who are not immune within five days of exposure to chickenpox it prevents most cases of disease.. The most common complication that can be fatal is varicella pneumonia. This causes symptoms such as shortness of breath, a fever, a cough, chest pain, and low oxygen saturation. , around 5-15%. Varicella zoster immune globulin. Varicella zoster immune globulin (VariZIG by Cangene) was approved by the FDA in December 2012; it is indicated for high-risk individuals within 10 days (ideally within 4 days) of chickenpox exposure; this agent reduces complications and the mortality rate of varicella, not its incidence. Antibiotic therapy

Chickenpox: Signs, Symptoms, and Complication

The first report of an adverse reaction following varicella vaccination was filed with VAERS (ID 74221) on May 26, 1995. This 3.5-year-old boy from Georgia who had no pre-existing conditions, received a dose of varicella vaccine on May 12, 1995. He developed convulsions the following day, was hospitalized, and reportedly recovered This leads to the skin condition known as shingles. Shingles is a painful skin rash, usually on one side of the body, that scabs over in a few days and clears up in a couple of weeks. It is painful because the virus causes damage to the nerves where it was dormant. In some cases, complications similar to those caused by chickenpox can happen According to CDC the decision to administer VariZIG depends on three factors: 1) whether the patient lacks evidence of immunity to varicella, 2) whether the exposure is likely to result in infection, and 3) whether the patient is at greater risk for varicella complications than the general population

Shingles - Symptoms and causes - Mayo Clini

The major clinical manifestations and complications of chickenpox will be reviewed here. Infection in the neonate and the treatment and prevention of this infection, including the varicella vaccine, and herpes zoster are discussed separately People who develop serious complications of chickenpox are usually hospitalized and treated with acyclovir. Potential complications of chickenpox include: Skin infections. Pneumonia, an infection of the lungs (see Patient education: Pneumonia in adults (Beyond the Basics) ). Encephalitis, inflammation of the brain

Herpes zoster ophthalmicus in a healthy child | BMJ Case

Acute varicella-zoster - Complications BMJ Best Practic

Chickenpox is usually a relatively benign infection. However, chickenpox infections can have severe complications. About 1 of every 1,000 children infected with varicella will develop severe pneumonia (infection of the lungs) or encephalitis (infection of the brain). In addition, about 1 of every 50 women infected with varicella during their. Chickenpox in babies is often mild and resolves without treatment, although there are possible complications. Learn about the symptoms and treatment of chickenpox in babies here. This article. Basically - if you have more severe varicella, or are developing complications, you're more likely to need ibuprofen. It might not be that ibuprofen causes complications, but rather bad varicella needs ibuprofen, and is also more likely to get complications anyway. As the famous saying goes, Correlation does not equal causation Now, after 15 years of vaccinations, chickenpox deaths have decreased by 90%, and hospitalizations have decreased by 84%. The best way to protect your child from the severe complications of chickenpox is to have them get the vaccine

PPT - Review of childhood and Adolescent Vaccination 2010

Chickenpox (varicella) NHS infor

Having chickenpox during pregnancy could potentially lead to chickenpox infection or birth defects in your unborn child, depending on when you are infected. Shingles Complications. Shingles. Encephalitis is a rare complication. Varicella may be fatal in children with leukemia or children who are taking adrenocorticosteroids. Prevention. Administration of varicella-zoster immune globulin (VZIg) within 72 hr of exposure will prevent clinical varicella in susceptible, healthy children While varicella is a self-limited infection in most healthy children, the incidence of hospitalization and even mortality in selected groups is significant. Varicella can cause significant complications, such as soft tissue infection, pneumonia, hepatitis, and encephalitis

Chickenpox in Adults: A Higher Risk of Complications

Varicella vaccine has reduced the numbers of chickenpox cases and their complications by 90%. The current aim in the U.S. and many other countries is to achieve universal (or nearly universal) immunization of children with the chickenpox vaccine (varicella vaccine). The vaccination requires only two shots, may be combined with MMR (MMRV) in one. Exposure to the varicella-zoster virus in people who aren't immune to it causes the chickenpox (not shingles), which can be serious in newborns. Although the chickenpox vaccine reduces the severity and complications of chickenpox, your baby won't get it until he's 12 to 15 months old

varicella zosterChickenpox: Symptoms, treatment, stages, and causes

Varicella (chickenpox) is caused by the varicella-zoster virus (VZV), which also causes shingles. The virus spreads through the body into the skin causing rashes to appear According to the CDC, complications associated with varicella include pneumonia, bleeding problems, infection or inflammation of the brain, group A streptococcal infections, sepsis, bone. Chickenpox usually isn't dangerous in children. But some people are at higher risk for complications from chickenpox, including pregnant people and newborns. The chances of getting chickenpox during pregnancy are low. Most pregnant people are immune to chickenpox because they've had the infection before or they've been vaccinated against it But they can cause complications in certain high-risk groups. Learn more. These tests check to see if you are or have ever been infected with the varicella zoster virus, which causes chickenpox and shingles. Both diseases are uncomfortable but are usually not serious. But they can cause complications in certain high-risk groups 2 Varicella vaccine Children need 2 doses of varicella vaccine, usually: First dose: 12 through 15 months of age Second dose: 4 through 6 years of age Older children, adolescents, and adults also need 2 doses of varicella vaccine if they are not already immune to chickenpox. Varicella vaccine may be given at the same time as other vaccines