Wash your hands, and cover your mouth/nose when you cough or sneeze. Try to be clean all the time. If you touch metal handles or doors in a public place, be sure to wash your hands afterwards, and don't touch your face.
Good hygiene.
they can be prevented by keeping your food in good place or by preserving it
Bacterial
Bacterial
Bacterial pneumonia
Prevention of lymphadenitis depends on prompt treatment of bacterial and viral infections.
Some bacteria are air-borne, so the answer is not necessarily.
Bacterial pneumonia, specifically pneumococcal pneumonia (aka Streptococcus pneumoniae).
Diphtheria
Cooking to safe temperatures will inactivate any bacterial contamination that was present.
Cooking to safe temperatures will inactivate any bacterial contamination that was present.
Polio is not caused by a bacterial infection. Polio is caused by a viral infection. While both are extremely tiny the viruses are 100 times smaller. Both viral and bacterial infections can sometimes be prevented by proper sanitation. Washing your hands after using the bathroom is a good way to avoid many viral and bacterial infections.