Maithili to English:
जँ रोगाणुकेँ कमजोर कऽ देल जाय तऽ ओकरा लेल ई बहुते दुर्लभ छैक कि ओ अपन रोगाणुक रूपमे फेरसँ बदलि जायत आ तकर बाद बिमारी उत्पन्न करत।
Given that pathogens are attenuated, it is extremely rare for them to revert to their pathogenic form and subsequently cause disease.