Are bacterial infections contagious?

Sometimes: Some bacterial infections are, like strep throat, or pink eye, but many develop that are not really contagious, like sinusitis, cellulitis, or diverticulitis. If you have a concern, you should discuss the specifics with your doctor. It is also always a good idea to always wash your hands or use hand sanitizer, whenever you are out, like shopping, airports, grocery stores etc to minimize risks.

Some are/some not: Some bacterial infections like Meningococcal meningitis and tuberculosis are contagious. Others like an e. Coli urinary tract infection or a ruptured appendix with peritonitis are not.