Typhoid vaccine | Route | 3-year efficacy | Booster | Adverse reactions | |
---|---|---|---|---|---|
Local | Systemic | ||||
Vi Polysaccharide | Parenteral | 30–70 % | 2 years | 10–40 % | 2 % |
Live Ty21a | Oral | 34–58 % | 5 years | NA | <1 % |
Parenteral heat-phenol inactivated | Parenteral | 51–77 % | 3 years | 10–50 % | 10–20 % |
Acetone-inactivated | Parenteral | 75–94 % | Not applicable | 10–50 % | 10–20 % |