You will not require anti-malarial drugs if visiting or passing through Bahrain.
Below is a table designed to show you what vaccines are mandatory, recommended or ones to consider when visiting Bahrain:
|Cholera||Hepatitis A||Hepatitis B||Japanese Encephalitis||Meningitis||Rabies|
|Tetanus||Tick Borne Encephalitis||Tuberculosis||Typhoid||Yellow Fever Vaccine|
Man = Mandatory
Con = Consider
Rec = Recommended
Req = Required if visiting from area with risk of transmission