Scrub_typhus_vaccine
Typhus vaccine
Inventor - Rudolf Weigl
Typhus vaccines are vaccines developed to protect against typhus.[1] As of 2020 they are not commercially available.[2][3][4]
One typhus vaccine consisted of formaldehyde-inactivated Rickettsia prowazekii. Two doses were injected subcutaneously four weeks apart. Booster doses were required every six to twelve months.[citation needed]