Typhoid vaccine

Typhoid vaccines are vaccines that prevent typhoid fever. There are two types that are widely available: Ty21a (a live vaccine given by mouth) and Vi capsular polysaccharide vaccine (an injectable subunit vaccine). They are about 30 to 70% effective for during the first two years depending on the specific vaccine in question.

单词	Typhoid vaccination
释义	Typhoid vaccination 英语百科 Typhoid vaccine Typhoid vaccines are vaccines that prevent typhoid fever. There are two types that are widely available: Ty21a (a live vaccine given by mouth) and Vi capsular polysaccharide vaccine (an injectable subunit vaccine). They are about 30 to 70% effective for during the first two years depending on the specific vaccine in question.
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Typhoid vaccination

Typhoid vaccine