Many parents wonder if they'll get an opportunity to see their child during basic training. Again, the answer largely depends on the branch of service and the installation. However, if your child's basic training falls during a major holiday, such as Christmas, he or she may get a pass for a short visit home.
home / medterms medical dictionary a-z list / opportunistic microorganism definition Medical Definition of Opportunistic microorganism Opportunistic microorganism: A bacterium, virus, protozoan or fungus that takes advantage of certain opportunities to cause disease. Those opportunities are called opportunistic conditions. These microorganisms are often ones that can lie dormant in body tissues for many years, such as the human herpes viruses, or that are extremely common but usually cause no symptoms of illness.
HIV weakens the immune system so that opportunistic infections can develop. If you are HIV-infected and develop opportunistic infections, you might have AIDS. In the US, the Center for Disease Control (CDC) is responsible for deciding who has AIDS. The CDC has developed a list of about 24 opportunistic infections. If you have HIV and one or more of these official OIs, then you have AIDS.