Colds (เป็นหวัด)
Colds are the most common of infectious diseases. Colds are viral infections that are transmitted via droplets spread from person to person in coughs, sneezes, and respiratory secretions. Colds are usually of
short duration, lasting one week or less, and the symptoms are milder than other respiratory diseases such as influenza.
Each person averages more than three colds per year throughout his or her lifetime.
Rhinoviruses, single-stranded RNA viruses of the picornavirus group are the most common causes of colds. At least 115 different rhinoviruses have been identified. About 25% of colds are due to infections with
other viruses. Coronaviruses cause 15% of all colds in adults. Adenoviruses, coxsackie viruses, respiratory syncytial viruses (RSV), and orthomyxoviruses are collectively
responsible for about 10% of colds.
Aerosol transmission of the virus is probably the major means of spreading colds, although experiments with volunteers suggest that direct contact and fomite contact are also methods of transmission.
Colds (เป็นหวัด)Colds are the most common of infectious diseases. Colds are viral infections that are transmitted via droplets spread from person to person in coughs, sneezes, and respiratory secretions. Colds are usually ofshort duration, lasting one week or less, and the symptoms are milder than other respiratory diseases such as influenza. Each person averages more than three colds per year throughout his or her lifetime. Rhinoviruses, single-stranded RNA viruses of the picornavirus group are the most common causes of colds. At least 115 different rhinoviruses have been identified. About 25% of colds are due to infections withother viruses. Coronaviruses cause 15% of all colds in adults. Adenoviruses, coxsackie viruses, respiratory syncytial viruses (RSV), and orthomyxoviruses are collectivelyresponsible for about 10% of colds. Aerosol transmission of the virus is probably the major means of spreading colds, although experiments with volunteers suggest that direct contact and fomite contact are also methods of transmission.
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