A furuncle is 

Common colds are caused by the 

Catarrhal stage refers to 

Mycoplasma pneumonia is leading casue of pneumonia in 

Facial pain and pressure, headache, malaise, and thick green nasal discharge are symptoms of

Almost 30% of healthy people carry Staphylococcus aureus in their nasal cavity and passages.

Whooping cough is  known as 

Pneumonia is a disease of the upper respiratory system caused by bacteria, viruses, or fungi infections.

Chloroamphenicol

Viruses are difficult to target selectively because