Production of Polio Vaccine Explained in Tamil

[@aarthia1984]

Tq sir.....I had trouble to observe this topic.....now... after watching this vedio I....had.... clear.... about...this... topic....sir.....tq....so...much....sir......

[@krishnavenissk5024]

Good explanation tq so much sir

[@rraja345]

தெய்வமே... 🙌

[@princesnickson6660]

Nice

[@NithyaKalyani-f8o]

oral polio vaccine preperation explanation clear ah venum sir

[@deepadeepa4650]

Tq Sir