WHAT IS IMMUNITY ? How Immune System Response To COVID-19?


In biology, immunity is the capability of multicellular organisms to resist harmful microorganisms. Immunity involves both specific and nonspecific components. The nonspecific components act as barriers or eliminators of a wide range of pathogens irrespective of their antigenic make-up. Other components of the immune system adapt themselves to each new disease encountered and can generate pathogen-specific immunity.

What is Covid-19 ?

Coronavirus disease (COVID-19) is an infectious disease caused by a newly discovered coronavirus.


Most people who fall sick with COVID-19 will experience mild to moderate symptoms and recover without special treatment.

Is Covid-19 Caused by Virus or Bacteria??

The coronavirus disease (COVID-19) is caused by a virus, NOT by bacteria.

The virus that causes COVID-19 is in a family of viruses called Coronaviridae. Antibiotics do not work against viruses. Some people who become ill with COVID-19 can also develop a bacterial infection as a complication. In this case, antibiotics may be recommended by a health care provider.

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There is currently no licensed medication to cure COVID-19. If you have symptoms, call your health care provider or COVID-19 hotline for assistance.

In What Circumstances Carona Virus Survive longest??

Coronaviruses die very quickly when exposed to the UV light in sunlight. Like other enveloped viruses, SARS-CoV-2 survives longest when the temperature is at room temperature or lower, and when the relative humidity is low (<50%).

How Carona Virus React to our immunity??

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The immune response by humans to CoV-2 virus occurs as a combination of the cell-mediated immunity and antibody production, just as with most other infections.

How long Covid Vaccine Work ??


Two-dose vaccine remains highly effective for at least six months, and likely longer. People who got Moderna’s vaccine also still had notable levels of virus-fighting antibodies six months after the second required shot.

Covid-19 Survive in drinking water or sewage??


Currently, there is no evidence about the survival of the COVID-19 virus in drinking-water or sewage.

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