Is it possible to be infected by the same cold virus twice?

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Discussion Overview

The discussion revolves around the possibility of reinfection by the same cold virus after recovering from an illness. Participants explore the nature of cold viruses, their transmission, and the immune response to infections, with a focus on the rhinovirus and its variants.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant questions whether it is possible to be reinfected by the same cold virus after recovery, noting the presence of germs on surfaces they have touched.
  • Another participant suggests that the immune system learns to identify and defeat the virus, implying that reinfection would likely involve a different version of the virus due to the variability of rhinoviruses.
  • A participant expresses curiosity about the concept of being immune to one's own germs and asks about the survival time of cold viruses on surfaces and in mucus.
  • One response indicates that while primary transmission is through aerosols, surface contact is also a possibility, and mentions that rhinovirus can survive for up to 18 hours in suitable conditions.
  • The same participant clarifies that while one may not feel sick after recovering, they are generally not immune to their own germs, highlighting the presence of many foreign cells in the body.
  • A participant shares their personal practices of self-quarantine and meticulous cleaning to prevent transmission in their remote living situation.

Areas of Agreement / Disagreement

Participants express differing views on the possibility of reinfection by the same virus, with some suggesting that different variants may be involved. The discussion remains unresolved regarding the specifics of immunity and virus survival on surfaces.

Contextual Notes

There are limitations regarding the assumptions about immune response and the variability of cold viruses, as well as the conditions affecting virus survival on surfaces.

ElliotSmith
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I am just getting over a relatively minor headcold, and I was curious if it was possible to get infected by the same bug you just got over.

My keyboard, computer desk, and other objects are covered in these germs as I have touched them and sneezed on them countless times in the past 5-6 days.

Do these exact same germs pose any actual risk of reinfection?

And what if you get somebody else sick, can you catch it back from them after you get well?
 
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Getting over a virus means that your immune system has learned to identify and defeat it. The cold rhinoviruses are among the most variable known.

No, if you were indeed over version one, then your subsequent infection was with a different version.

The example of the less variable influenza viruses may be illustrative.
 
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So I am immune to my own germs?

How long do virus germs like from the common cold, stay alive and active on surfaces and infected mucous like phlegm?
 
Primary transmission is by aerosols. Surface contact is certainly possible. Rhinovirus viron survival up to 18 hours in an hospitable external environment is possible .

Immune from your own germs? In general, no, just not feeling sickly. There are estimated to be vastly more foreign cells in your body than yours.

I/we self-quarantine/isolate to the extent possible, we live on a small remote Island. I am a meticulous housekeeper/cleaner. My favorite tools are my HEPA vacuum and jug of NaClO bleach.
 

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