What are Infectious Diseases?

Infectious diseases are diseases caused by various pathogenic microorganisms such as viruses, bacteria, protozoans, fungi, and other parasites. These infectious diseases can be transmitted by animals, humans, insects, or other agents.
Infectious agents are present all around us, and they come in different shapes and sizes. They can be categorized based on some common characteristics. Some are single-celled animals such as fungi, bacteria, and viruses. Other multicellular organisms such as worms are known to cause diseases too.
Some infectious diseases can be passed from person to person. Some are transmitted by insects or other animals. And you may get others by consuming contaminated food or water or being exposed to organisms in the environment.

List of Infectious Diseases

Here is the list of  a few infectious diseases:

  1. Polio.
  2. Rabies.
  3. Mumps.
  4. Dengue.
  5. Plague.
  6. Malaria.
  7. Anthrax.
  8. Cholera.
  9. Measles.
  10. HIV/AIDS.
  11. Smallpox.
  12. Influenza.
  13. Meningitis.
  14. Diphtheria.
  15. Melioidosis.
  16. Hepatitis A, B, and C.
  17. Tuberculosis.
  18. Yellow Fever.
  19. Typhoid Fever.
  20. Whooping cough.
  21. COVID-19.

Infectious Diseases

Common Infectious Diseases

Infectious Diseases   Pathogen
Common cold, influenza, AIDS, dengue fever Viruses
Typhoid, Cholera Bacteria
Kala-azar Leishmania (Protozoa)
Acne Staphylococci (Bacteria)
Sleeping sickness Trypanosoma (Protozoa)
Elephantiasis Worms

These infections are caused, when an organism invades into the body cells, releases toxins, and triggers various reactions in the host tissues.

Prevention of Infectious Diseases

  • Frequently Wash your hands. This is especially important before and after preparing food, before eating, and after using the toilet. And try not to touch your eyes, nose, or mouth with your hands, as that’s a common way germs enter the body.
  • Stay home when ill. Don’t go to work if you are vomiting, have diarrhea or have a fever. Don’t send your child to school if he or she has these signs, either.
  • Prepare food safely. Keep counters and other kitchen surfaces clean when preparing meals. Cook foods to the proper temperature, using a food thermometer to check for doneness. For ground meats, that means at least 160 F (71 C); for poultry, 165 F (74 C); and for most other meats, at least 145 F (63 C). Also promptly refrigerate leftovers — don’t let cooked foods remain at room temperature for long periods of time.
  • Make safe sex. Always use condoms if you or your partner has a history of sexually transmitted infections or high-risk behavior.
  • Don’t share personal items. Use your own toothbrush, comb, and razor. Avoid sharing drinking glasses or dining utensils.

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