What is an infectious disease?

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we’re going to read about infectious diseases and a few terms used to depict them and look at a few different types of infectious diseases first what is an infectious disease?


An infectious disease is caused by an infectious agent like viruses, bacteria, parasites, or fungi


Infectious diseases

when an organism enters the body, some people fight it off with their immune system while others can go on to develop disease people are likely to develop the disease if they have weakened immune systems this could be due to drugs, age, or another disease, they’re also more likely to develop the disease if they’re not immune to it.


 The incubation period if they haven’t had the disease before or if they haven’t been vaccinated the time from when someone gets infected – and symptoms start is called the incubation period


The clinical stage of the disease is set apart by the beginning of side effects or symptoms there can be significant variation in the clinical stage going from very mild symptoms to very severe symptoms


The disease lasts When the infection has resolved, or the person dies.


Important terms


Infectious period the infectious period is the time during which the contaminated individual can spread the illness and taint others.


Carriers sometimes people may not have any symptoms but still, be able to infect others these people are called carriers


Fatality is a measure of the severity of a disease is the proportion of people that die from being infected


Reproductive rate

is a term that describes how infectious a disease is it is the average number of secondary cases that occurs because of one infected individual

categories of infectious diseases


zoonotic diseases are diseases of animals which when transmitted to humans can cause disease it is determined that over 60 percent of human infectious diseases are zoonotic examples of zoonotic diseases include diseases like leptospirosis toxoplasmosis Campylobacter and rabies an emerging


An infectious disease is a disease that has emerged in the inhabitants for the first time or one that may have existed earlier. Infectious diseases can be acquired in different ways: through direct or non-direct contact with an infected person, via consumption of contaminated foods, having a contaminated person

tropical diseases are a group of tropical diseases that affect the poorest countries of the world traditionally, they have not received much global attention but continue to cause illness


vector-borne diseases are diseases that can be transferred from an infected animal or human to another person through the bite of a vector the most common vector is the mosquito.

How to prevent infectious disease

There are many ways to prevent the spread of infectious diseases. Some of these include:

1. Washing your hands regularly and often, especially after coming into contact with people or surfaces that may be contaminated.

  1. Avoid close contact with patients.
  2. Disinfect surfaces that may be contaminated with germs.
  3. Wear a face mask if you are sick.
  4. Getting vaccinated against diseases such as influenza, hepatitis, and measles.
  5. Avoid contact with animals or their feces.
  6. Practicing safe relation by using condoms and avoiding contact with bodily fluids of someone who is infected


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