Can common cold affect on sperm?

Think of sperm as something that is being made all the time but that takes 72 or so days to mature. So, in the testicle, there are sperm that are young and mature and every stage in between.

When a man gets a fever or illness, all of those sperm, both young and old can be affected. That means that the sperm can be abnormal for the next 72 days or so. However, they may NOT be affected. It depends on the illness.

Therefore, to have a sperm sample that has no chance of being affected by this fever, one has to wait about 2.5 months to retest.