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- $Unique_ID{BRK00949}
- $Pretitle{}
- $Title{How is it Possible to Continue to Have Colds Year After Year?}
- $Subject{common cold colds immunity virus viruses viral infection Infections
- nose throat sinuses sinus Respiratory rhinoviruses adenoviruses parainfluenzae
- coronaviruses spread direct contact}
- $Volume{A-6}
- $Log{
- Symptoms of the Common Cold*0008502.scf}
-
- Copyright (c) 1991-92,1993 Tribune Media Services, Inc.
-
-
- How is it Possible to Continue to Have Colds Year After Year?
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- QUESTION: I know I catch a cold more than once in a year, probably closer to
- three or four attacks. I always thought that when you had an infectious
- disease that your system built up an immunity to the bug. How is it possible
- then to continue to have these colds year after year? It seems I should be
- immune to them by now. Can you clear up this mystery?
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-
- ANSWER: I'll try, and think the statistics will amaze you. You're right
- about building up an immunity, and you would probably be way ahead by now if
- the common cold was caused by a single virus, or "bug" as you will have it.
- There are probably more than 200 different viruses that cause the symptoms of
- the cold, many of them rhinoviruses ("rhino" from the Greek word "rhis"
- meaning "nose"). Other viruses, such as some 35 adenoviruses, 5
- parainfluenzae viruses and three or more coronaviruses, also play a role in
- bringing you your yearly quota of colds. Actually children and young adults
- average about 6 colds per year, but once you pass 30, your body has assembled
- a collection of immune responses that help keep the numbers of colds per year
- reduced. However, as we get into very old age, the systems seems to forget,
- and doesn't "recognize" the invading viruses, and cold frequency mounts once
- again. Cold symptoms from viral infections are generally over within a week
- to 10 days time, usually do not cause a fever, and may be accompanied by a
- sore throat and a generalized malaise. When the sneezing and runny nose lasts
- for a longer period, it's time to consider an allergy as the cause. Although
- in the past, the spread of the cold was attributed to sneezing, and the
- presence of the virus in the tiny water droplets left hanging in the air after
- a sneeze, present thinking is that the spread of the virus takes place by
- direct contact, shaking hands for example. A family can do a great deal to
- prevent the spread of the infection from one person to the other by a regular
- routine of frequent and rigorous hand washing. Since crowding can contribute
- to the spread of the virus, its a good idea to stay out of crowds when the
- cold season is in sway, if that is at all possible. However that bit of
- advice does not apply to the youngsters who might make that the excuse to skip
- school.
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- The material contained here is "FOR INFORMATION ONLY" and should not replace
- the counsel and advice of your personal physician. Promptly consulting your
- doctor is the best path to a quick and successful resolution of any medical
- problem.
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