Scientist Revealed Century-Old BCG Vaccine is Failing to Protect Against COVID-19

In the COVID-19 many scientist tried to test the old BCG vaccine against the coronavirus, but no effect was found. According to the study, the old vaccine is failing to protect against COVID-19.

As reported by The New York Times

What is the century-old vaccine BCG?

BCG Vaccine stands for Bacille Clamette-Guerin Vaccine. It was developed in early 1990s and used for tuberculosis(TB) for a long time. But when it is injected it causes some bacteria effect, that will help to fight against the diseases.

Why is the BCG vaccine failing to protect against COVID-19?

BCG vaccine failed to protect against COVID-19, A study analyzed that the BCG vaccine was received by the health workers and after analyzes found it failure, due to non production of enough antibodies against the COVID-19.

4 Reasons of BCG Vaccine Failure

There are several reasons why the BCG vaccine is failing to protect against COVID-19.

1. BCG vaccine was specifically developed against TB and other infection not for protection of COVID-19.
2. BCG vaccine boost the immune system that have no specific virus, while COVID-19 vaccine developed for targeting the specific virus.
3. BCG vaccine given to the children for long time protection against TB, but not effective in the older who have weak immune system.
4. BCG vaccine has developed for trigger the immune system which is different form from the immune response triggered by COVID-19.

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