As a result of a vaccine found by UK research, they are vulnerable to Covid variants
According to a new study in the UK, people who have received a shot of the Covid-19 vaccine and have never been infected with the virus may be very vulnerable to new variants.
Researchers at Imperial College London, Queen Mary University and London College have studied immune responses among health workers who received a shot of the BioNTech / Pfizer vaccine.
Scientists previously found that Covid-19 was shown to be unpolluted by people very low levels of neutralizing antibodies Against the original strain in Wuhan, the B.1.1.7 variant first identified in Kent and the B.1.351 in South Africa.
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The reason for this appeared to be that, for most people, the vaccines produced multiple times of immunity.
They triggered antibodies, which latch onto the virus and block it but are super-specific so less effective against some mutations, but also white blood cells called T cells and B cells, which are less specific and better able to recognise variants.
ONE DOSE OF A VACCINE HALVES THE SPREAD OF VIRUS
A single dose of vaccine slashes the risk of spreading coronavirus by up to half, a major study has revealed.
Not only does the jab reduce a person s chance of catching Covid in the first place, it greatly reduces their chances of passing it on, should they get infected.
Brazil backs away from the virus brink as deaths top 400K Photo: AP Photo/Silvia Izquierdo. A demonstrator places a Brazil national flag on a mattress symbolizing COVID-19 victims, during a protest against the Government s handling of the COVID-19 pandemic, organized by the Rio de Paz NGO, in front of the Ronaldo Gazolla hospital in Rio de Janeiro, Brazil, Wednesday, March 24, 2021. Associated Press Created: April 30, 2021 11:05 AM
For most of this month, intensive care units across Brazil were at or near capacity amid a crush of COVID-19 patients, and sedatives needed to intubate patients dwindled. The nation s biggest cemetery had so many corpses to bury that gravediggers worked hours past sundown.
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