August 24, 2014. Captain Americaâs shield is a classic emblem, a near-indestructible aspect of the suspect that may well survive the Captain himself. Itâs been broken in the past, though, and it could be broken in the Marvel movies of the near future.
Bacterial infections may develop after a viral illness such as a cold or the flu. Bacterial infections may affect the upper or lower respiratory system, and symptoms tend to localize to one area. The most common sites of bacterial infections in the upper respiratory system are the sinuses and throat.Pneumonia is the most common bacterial infection of the lower respiratory system.Antibiotics are effective against bacterial infections only after they have developed, so most doctors do not prescribe them until a bacterial infection is suspected or confirmed.By Healthwise Staff.neumonia is the most common bacterial infection of the lower respiratory system. Antibiotics are effective against bacterial infections only after they have developed, so most doctors do not prescribe them until a bacterial infection is suspected or confirmed. By Healthwise Staff.
Viruses and bacteria. The most common cause of a cough is a respiratory tract infection, such as a cold or flu. Respiratory tract infections are usually caused by a virus and may last from a few days to a week. Infections caused by the flu may take a little longer to clear up and may sometimes require antibiotics.