Maithili to English:
जखन पूर्वमे कोनो व्यक्ति एक बेर कोविडसँ प्रभावित भऽ जायत छथि तऽ कि ओ प्रतिरक्षित नहि भऽ जायत छथि?
Doesn't a person become immune once he or she has been affected by Covid previously?