1) the cause of hepaitis is the viral infection . its remedy is a complete bed rest depending on its chronicness.
2) AIDS is caused by the the virus HIV. its remedy is preventing all the disease causing agents like contaminated water,oily foods etc becase rhe small disease can turn to the large one because immune cell does not fight against the microbe.
3) malaria is caused by the protozoan. its prevention is dont allow the water to stagnant in your locality,use a mosquito net while sleeping etc...
#PLZ MARK IT AS BRAINLIEST#