Non-toxigenic strains of C.diptheriae are converted to toxigenic by
a) Mutation
b) Beta phage
c) Radiation
d) Ionisation
Erythrasma is caused by
a) C.diphtheriae
b) C.ulcerans
c) C.minutissimum
Child is having perianal pruritus with following eggs due to-
a)E.vermicularis
b)Ascaris
c)Ancylostoma duodenale
d)S stercoralis
Food poisoning due to enterotoxin with incubation period of 2-6hours is caused by:
a) Vibrio cholera
b) Staphylococcus aureus
c) Clostridium perfringens
d) Clostridium botulinum