Infections, caused by bacteria, viruses, fungi, parasites, or prions, can be mild or severe, necessitating different approaches to treatment. Our bodies and the environment host many organisms that are typically harmless or even beneficial. However, certain conditions can cause these organisms to trigger infections, which are illnesses caused by harmful pathogens entering the body from external sources. These pathogens include bacteria, fungi, parasites, viruses, and, on rare occasions, prions. Infections can be contracted from insect bites, other people, or contaminated water, food, or soil. While mild infections might improve with rest and home remedies, more severe infections may require hospital treatment. Read on to learn how infections are treated. Different Types of Infections Depending on their cause, infections can be primarily categorised into the following types:
- Bacterial Infections: Bacteria are single-celled organisms with their genetic information encoded on a small piece of DNA. They are ubiquitous, including on and inside the human body. While many bacteria are harmless or beneficial, some release toxins that can cause illness.
- Viral Infections: Viruses consist of genetic material (DNA or RNA) enclosed in a protective shell (capsid). They are much smaller than cells and cannot reproduce independently. They invade host cells and utilise the cell’s protein synthesis pathways to replicate.
- Parasitic Infections: Parasites live and reproduce inside other organisms. This category includes worms (helminths) and some single-celled organisms (protozoa).
- Fungal Infections: Various fungi exist on and in the body. When fungi grow excessively or harmful fungi enter the body through the nose, mouth, or skin cuts, they can cause infections.
- Transmissible Spongiform Encephalopathies/Prion Diseases: These rare infections are caused by prions, which are misfolded proteins that induce other proteins in the body, particularly in the brain, to also become misfolded. The body cannot use or dispose of these faulty proteins, leading to their accumulation and subsequent illness.
- Antibiotics
- Antivirals
- Antifungals
- Anti-parasitics
- Vaccines are available for various infections and work by training your immune system to recognise and combat harmful invaders.
- Wash your hands thoroughly with soap and water, especially before preparing or eating food, after contact with animal or human faeces, after using the bathroom, and after gardening or handling dirt.
- Cover your nose and mouth when you sneeze or cough to prevent spreading germs.
- Regularly disinfect frequently touched surfaces in your home and workplace.
- Avoid close contact with people who are sick and refrain from sharing personal items with them.
- Avoid drinking or swimming in water that might be contaminated.
- Use a condom during any kind of sexual activity to reduce the risk of sexually transmitted infections.
- Use bug repellents approved for ticks and mosquitoes, wear protective clothing, and check for ticks after spending time in wooded areas or places with long grass.