बेयो मानोना नोंनि देहाया लोनथि बेरनाय भाइरासनि होबथानायखौ जौगाहोयो , जाय नोंखौ फिन - सनदेरजानाय जानायनिफ्राय दबथायगोन ।
This is because your body develops immunity to the chickenpox virus which stops you from becoming re infected .