Covishield cover high 7 months after doses, 90% antibody prevalence: Study

The study indicated that a third booster may not be necessary, especially since a large portion had yet to receive their second doses of Covishield.

Muralidhar Tambe, M.D. According to, professor and Head of Community Medicine at BJMC, The study also discovered that antibody prevalence was above 90% in all categories of the 558 healthcare workers (HCWs) who took part in the trial months after receiving two vaccines doses.

Questions regarding vaccine effectiveness:

Are COVID-19 vaccines beneficial for people with blood cancer?

COVID-19 vaccinations provide some protection to the majority of people with blood cancer. However, according to the LLS National Patient Registry, immunological response to vaccination differs depending on a patient’s cancer type and treatment. As a result, LLS advises all blood cancer patients and survivors to get vaccinated, rather than acting unvaccinated.


Is the third dosage of COVID-19 vaccination advantageous for blood cancer patients?

Yes. Most blood cancer patients benefit from a third COVID-19 vaccination dosage as part of the initial vaccine series, according to a study published in the journal Cancer Cell by LLS.
It is crucial to highlight, however, that some blood cancer patients will not generate a full antibody response even after a third dose, therefore extra precautions like wearing a mask and social isolation should be continued.

Should people with blood cancer receive a booster dose of the vaccine?

Yes. A booster (fourth) vaccine dosage for blood cancer patients six months after completing their primary three-dose series is recommended by the Centers for Disease Control and Prevention (CDC).
Almost all blood cancer patients, as well as many survivors, fall into the category of immunocompromised people. Click here for additional information on who requires a booster dose of the COVID-19 vaccination.

Do the COVID-19 vaccinations provide adequate protection against the Delta variant?

While the existing COVID-19 vaccinations are still very effective against the delta variant, they may provide less protection than the original virus strain. However, encouraging Israeli evidence shows that the Pfizer vaccination is 94% efficient in preventing severe disease.

In a separate study, Public Health England discovered that two doses of the Pfizer vaccine were over 90% effective in preventing hospitalization. Antibodies are only one part of the puzzle; our immune systems also respond to vaccination in other ways that may provide protection. T cells, which are immunological cells, may have a role in our immune system’s ability to defend us from COVID-19. This is one of the questions that the LLS National Patient Registry is looking into.


What is the mechanism of action of these new vaccines?

The purpose of all vaccinations is to induce the body to produce protective antibodies against a disease without causing us to become ill. Messenger RNA is used in the Pfizer and Moderna vaccines to direct cells in the body to manufacture viral proteins…In this example, the cells learn how to create the “spike protein” seen on the COVID-19 virus’s surface.

The Johnson & Johnson viral vector COVID-19 vaccine employs genetic material to assist your immune system recognize and responding to the coronavirus’s spike protein on its surface. All three vaccines are designed to get your body ready to fight infection if you are exposed to the virus in the first place. The vaccines’ rapid availability is indeed astounding, but they are the result of decades of rigorous and peer-reviewed study.


Should I be tested for antibodies to verify the vaccine’s efficacy?

Antibody testing must be viewed with caution. Antibodies to SARS-CoV-2, the virus that causes COVID-19, appear to provide some protection against becoming ill and suffering from severe disease. Antibodies, on the other hand, do not eliminate the chance of COVID-19 breakthrough infection.

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