Wash your hands often. This is especially important before and after preparing food, before eating and after using the toilet.
Get vaccinated. Immunization can drastically reduce your chances of contracting many diseases. You should keep your recommended vaccinations up-to-date.
Antibiotics - Some antibiotics such as isoniazid, rifampicin, and pyrazinamide have been used as cure for certain communicable diseases.
Use of face mask - A wide variety of designs of face masks have been developed to curb spread of communicable diseases.