What is Superinfection?

A superinfection is generally defined as a second infection superimposed on an earlier one, especially by a different microbial agent of exogenous or endogenous origin, that is resistant to the treatment used against the first infection. An example of this in bacteriology is the overgrowth of endogenous Clostridium difficile which occurs following treatment with a broad-spectrum antibiotic.

In virology, the definition is slightly different. Superinfection is the process by which a cell that has previously been infected by one virus gets co-infected with a different strain of the virus, or another virus, at a later point in time. Viral superinfections may be resistant to the antiviral drug or drugs that were being used to treat the original infection. Viral superinfections may also be less susceptible to the host's immune response.

Questions and answers on "Superinfection"

I have a small fleshy growth inside my mouth on the cheek . I had a canker sore near the gum on the same side that has healed. I have gotton canker...

doctor1 MD


Thanks for asking the query,

Canker sore can occur due to trauma physical or chemical or even due to stress.

I would suggest you to visit to a...

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What are Long term side effects of Anti-biotics? Augmentine to be specific

doctor1 MD

Brief Answer:
Less side effects

Detailed Answer:
Thanks for your query.

Augmentin is one of the safest antibiotics available. All antibiotics...

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Can I take flucloxacillin for cold sores?

doctor1 MD

Brief Answer:
Flucloxacillin only role will be to prevent superinfection from bacteria.

Detailed Answer:
Hi Nicky,

Though flucloxacillin has no...

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