Answer:
measels is caused by a single stranded Rna virus of the family Paramyxoviridae
I think Earth’s atmosphere plus atmosphere. So, 23+48=71. So, the answer is A
Answer:
Oral poliovirus vaccine or Sabin vaccine, named for its inventor American physician and microbiologist Albert Sabin, was developed. OPV contains live attenuated (weakened) virus and is given orally.