A ac

B ab

C ad

D bc

A Ohomyxoviridae

B Retroviridae

C Herpes virus

D Pox virus

A O 157:H7

B O 159:H7

C O 107:H7

D O 55:H7

A Hepatitis A

B Hepatitis B

C Hepatitis C

D Hepatitis D

A Acanthamoeba

B N.fowleri

C E.Histolytica

D E. Coli

A It is transmitted by feco-oral route

B Asymptomatic infections are common in children

C There is a single serotype causing infection

D Live attenuated vaccine produces herd immunity

A Ancyclostoma

B Strongyloides

C Trichinella

D Necator

A Treponema pallidum

B HPV

C EBV

D HHV6

A Positive selection during development

B Class I MHC Expression

C Antigen Specific Receptors

D All of the above

A Induction of apoptosis

B Induction of necrosis

C Immortalization of epithelial cells

D By stimulating telomerase