Covid and Breakthrough Infection: Basics Explained

There is a rise in breakthrough infections among the fully vaccinated- the rise in the number of COVID cases amongst fully vaccinated individuals has increased -are becoming more frequent as the highly transmissible Delta variant surges. The term implies that the virus “broke through a protective barrier provided by the vaccine.”

A breakthrough infection occurs when a person contracts a virus even after being fully vaccinated against it. He or she either remains asymptomatic or develops mild to moderate symptoms. In certain cases the individual can even succumb to the virus, but it is only a rare scenario. the degree of severity of disease among people who have a breakthrough infection is less severe than the severity of disease among people who aren’t vaccinated.


                  Coronavirus disease (COVID-19) is an infectious disease caused by a newly discovered coronavirus, are zoonotic, meaning they are transmitted between animals and people.

The COVID-19 virus spreads primarily through droplets of saliva or discharge from the nose when an infected person coughs or sneezes, so it’s important that you also practice respiratory etiquette (for example, by coughing into a flexed elbow). The best way to prevent and slow down transmission, Protect yourself and others from infection by washing your hands or using an alcohol based rub frequently and not touching your face.At this time, there are no specific vaccines or treatments for COVID-19.

Infectious agents come in many shapes and sizes. Categories include:

  • Bacteria
  • Viruses
  • Fungi
  • Protozoans


Bacteria are one-celled organisms that can be seen only with a microscope.

Not all bacteria are harmful, and some bacteria that live in your body are helpful. For instance, Lactobacillus acidophilus — a harmless bacterium that resides in your intestines — helps you digest food, destroys some disease-causing organisms and provides nutrients.

Some infections caused by bacteria include:

  • Strep throat
  • Tuberculosis
  • Urinary tract infections
  • Cholera.
  • Leprosy.
  • Plague.
  • Syphilis.
  • Anthrax.


Viruses are much smaller than cells. In fact, viruses are basically just capsules that contain genetic material. To reproduce, viruses invade cells in your body, hijacking the machinery that makes cells work. Host cells are often eventually destroyed during this process.

Viruses are responsible for causing many diseases, including:

  • AIDS
  • Common cold
  • Ebola virus
  • Genital herpes
  • Influenza
  • Measles
  • Chickenpox and shingles


There are many varieties of fungi, and we eat several of them. Mushrooms are fungi, as are the molds that form the blue or green veins in some types of cheese. And yeast, another type of fungus, is a necessary ingredient in most types of bread.

Other fungi can cause illness. One example is candida — a yeast that can cause infection. Candida can cause thrush — an infection of the mouth and throat — in infants and in people taking antibiotics or who have an impaired immune system. Fungi are also responsible for skin conditions such as athlete’s foot and ringworm.


Protozoans are single-celled organisms that behave like tiny animals — hunting and gathering other microbes for food. Many protozoans cause diseases, such as:

  • Giardia
  • Malaria
  • Toxoplasmosis


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