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.