Shiga toxin is produced by:

Correct option is C

Ans: (c) Escherichia coli Sol. Shiga toxin is produced by certain strains of Escherichia coli (E. coli), particularly E. coli O157:H7, which causes hemolytic uremic syndrome (HUS). This toxin can damage blood vessels and lead to kidney failure, especially in children and the elderly.
Explanation of each option:
· (a) Salmonella typhi: Salmonella typhi causes typhoid fever, but it does not produce Shiga toxin.
· (b) Streptococcus pyogenes: Streptococcus pyogenes is responsible for a variety of infections, including strep throat, but does not produce Shiga toxin.
· (c) Escherichia coli: Correct answer. Certain strains of E. coli, especially E. coli O157:H7, produce Shiga toxin, leading to serious complications like hemolytic uremic syndrome.
· (d) Staphylococcus aureus: Staphylococcus aureus causes a range of infections but does not produce Shiga toxin.