Cassandra Mougiakou, MD, specialist in Internal Medicine, Athens, Greece
Infection is the state when germs like bacteria, viruses, fungi and parasites invade and grow by multiplying in the body.
Infections by prions (e.g. Creutzfeldt‐Jakob disease), which are a type of protein that can trigger normal proteins in the brain to fold abnormally, will not be discussed here.
An infection can begin anywhere in the body and may spread through it. Disease can develop when the cells in the body get damaged as a result of the infection, leading to the appearance of symptoms of an illness.
It’s also possible to have an asymptomatic infection. Some examples of infections that don’t always cause symptoms include HPV, gonorrhea, and Chlamydia.
Types of infection acc. to their duration
Acute infections are the ones that, after their onset, they progress quite rapidly and are over after days or within 4 weeks.
Subacute infections last between 1 to 3 months.
Chronic infections can last for week...