Question

Which alternative typhoid vaccine formulation is injectable?

Options

• Injectable viral vector vaccine

• Injectable mRNA vaccine

• Injectable typhoid polysaccharide vaccine

• Injectable live attenuated vaccine

Answer 1

The injectable typhoid polysaccharide vaccine is mentioned as an alternative to the oral Ty21a vaccine. This parenteral formulation provides protection against Salmonella typhi and is suitable for individuals who cannot receive oral vaccines.