{"id":2537,"date":"2025-11-20T13:33:59","date_gmt":"2025-11-20T06:33:59","guid":{"rendered":"https:\/\/naviva.com.vn\/?p=2537"},"modified":"2025-12-26T07:47:12","modified_gmt":"2025-12-26T00:47:12","slug":"proactive-prevention-of-varicella-in-children-during-the-winter-spring-season-the-peak-season-for-varicella","status":"publish","type":"post","link":"https:\/\/naviva.com.vn\/en\/proactive-prevention-of-varicella-in-children-during-the-winter-spring-season-the-peak-season-for-varicella","title":{"rendered":"Proactive Prevention of Varicella in Children During the Winter\u2013Spring Season \u2013 the Peak Season for Varicella"},"content":{"rendered":"

Varicella is a common infectious disease in young children. It is highly contagious and can easily lead to outbreaks, particularly during periods of seasonal transition.<\/b><\/span><\/p>\n

Each year, cases typically begin to appear in late December and increase significantly in the early months of the year, peaking between February and May\u2014a time when children participate in more group activities and are exposed to crowded environments.<\/span><\/p>\n

Early varicella vaccination is strongly recommended by health experts as an effective measure to protect children. Currently, improved varicella vaccines that offer high immunogenicity and safety and meet international quality standards are available in Vietnam.<\/span><\/p>\n

What Is Varicella?<\/b><\/span><\/h2>\n

Varicella is an infectious disease caused by the Varicella Zoster Virus (VZV), which belongs to the Herpesviridae family\u2014a group of viruses capable of causing disease in humans.<\/span><\/p>\n

According to the Department of Preventive Medicine, varicella spreads rapidly through the respiratory route, respiratory droplets, and direct contact with skin lesions. It is one of the most contagious infectious diseases, with secondary attack rates of 70\u201390% among household contacts.<\/span><\/p>\n

Early symptoms of varicella include mild fever, fatigue, poor appetite, sneezing, runny nose, and a general feeling of malaise. These are followed by the appearance of small red rashes on the skin, which quickly progress into fluid-filled blisters.<\/span><\/p>\n

When blisters appear densely, the disease may be progressing more severely. Varicella typically lasts 7\u201310 days. In uncomplicated cases, the blisters dry out, form scabs, and fall off. The affected skin may appear slightly darker but usually improves over time without scarring.<\/span><\/p>\n

Potential Complications in Children<\/b><\/span><\/h2>\n

Varicella may lead to complications, particularly in children with weakened immunity or when care is inadequate, including:<\/span><\/p>\n

\u2013 Skin infections, impetigo, and secondary bacterial infections<\/span><\/p>\n

\u2013 Viral pneumonia<\/span><\/p>\n

\u2013 Encephalitis and cerebellitis<\/span><\/p>\n

\u2013 Dehydration due to high fever, poor appetite, and reduced fluid intake<\/span><\/p>\n

In the long term, children may have an increased risk of developing herpes zoster (shingles)\u2014a late reactivation of the virus occurring many years after primary varicella infection. Shingles may cause complications such as neuropathic pain, corneal ulceration, and even vision loss.<\/span><\/p>\n

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Which Age Groups Are at Higher Risk?<\/b><\/span><\/h2>\n

According to statistics from the Pasteur Institute in Ho Chi Minh City, approximately <\/span>90% of varicella cases occur in children aged 2 to 7 years<\/b>.<\/span><\/span><\/p>\n

Because varicella is highly contagious, school-aged children who frequently interact in crowded environments face a higher risk of infection.<\/span><\/p>\n

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Why Are Children More Susceptible to Varicella?<\/b><\/span><\/h2>\n

Young children have an immature immune system, making them more vulnerable to infectious agents. The virus spreads rapidly in group settings such as daycare centers and classrooms, especially since infected children can transmit the virus 1\u20132 days before the rash appears.<\/span><\/p>\n

Critical Periods to Watch<\/b><\/span><\/h2>\n

Varicella incidence usually rises from late winter through spring (from December to April\u2013May of the following year). During this time, parents should pay close attention to their children\u2019s health and proactively implement preventive measures.<\/span><\/p>\n

Preventive Measures Include:<\/span><\/h3>\n