In addition, a cost-benefit analysis should be done and the priorities regarding public health problems determined. However, when high mortality from meningitis attributable to Hib is identified and the vaccine is available, vaccination of the affected population is recommended. Return to top Typhoide Fever Vaccine Typhoid fever is a bacterial disease caused by Salmonella typhi and causes many mild and atypical infections related to the poor sanitation conditions and hygiene of the population. Systematic vaccination is not currently recommended. However, the strategy of vaccinating people at risk in endemic areas or in epidemic situations is utilized.
Immunity is conferred for approximately three years.
Immunity lasts about three years. It is thermolabile. Applied in adults and children over 6. Confers immunity for three years or more. Return to top Yellow Fever Vaccine Yellow fever is an acute viral infection of short-term duration and varying severity.