What causes colds? And what's the difference between a cold and flu?
- 1 decade agoBest Answer
Acute viral nasopharyngitis, often known as the common cold, is a mild viral infectious disease of the upper respiratory system (nose and throat). Influenza, commonly known as the flu, is an infectious disease of birds and mammals caused by an RNA virus of the family Orthomyxoviridae (the influenza viruses). In humans, common symptoms of influenza infection are fever, nausea, vomiting, sore throat, muscle pains, severe headache, coughing, and weakness and fatigue. In more serious cases, influenza causes pneumonia, which can be fatal, particularly in young children and the elderly. Sometimes confused with the common cold, influenza is a much more severe disease and is caused by a different type of virus. Similarly, the unrelated gastroenteritis is sometimes called "stomach flu" or "24-hour flu".
The common cold is caused by numerous viruses (mainly rhinoviruses, coronaviruses, and also certain echoviruses, paramyxoviruses, and coxsackieviruses) infecting the upper inspiratory system. Several hundred cold-causing viruses have been described, and a virus can evolve to survive, ensuring that any cure is still a long time from being developed. The nasopharynx is the central area infected. The reasons that the virus concentrates in the nasopharynx rather than the throat may be the low temperature and high concentration of cells with receptors needed for the virus.
- KatherineLv 44 years ago
Both colds and flu are caused by viruses. The classic cold symptoms are sore throat, cough and runny/blocked nose. Flu symptoms include spells of fever and chilliness, severe muscle pains, and also the classic cold symptoms. Flu has a more sudden on-set then a cold, though both last for about 5 or 6 days. Hope that answers your question.
- 1 decade ago
It is a viral infection caused by a retro virus.Flu and cold are noe and same thing.
- Anonymous1 decade ago
flu &cold are the same.They are caused by myxovirus influenza.
Flu is short for influenza