Vaccine: Doctor says you 'can't hope way into immunity'
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Vaccination has gifted Britons a new lease of life, with people now enjoying restriction-free society for the first time in 14 months. The looming threat of Covid remains, however, as tens of thousands of cases continue to rip through the UK. Although fully vaccinated people have the best protection, they’re not entirely immune, and they can continue to spread the disease.
How do vaccinated people spread Covid?
Vaccines provide a veil of protection for people, roughly 95 percent following a second dose.
Data has also shown they reduce viral transmission, cutting virility by more than 80 percent in some cases.
As such, they can still infect other people when they eject virus particles by sneezing or coughing.
The Delta variant, which is currently the most dominant in the UK, adds more danger.
The US Centres for Disease Control (CDC) based its newest mask advice on data from “breakthrough” infections.
In these cases, Covid “breaks through” the defensive wall provided by the vaccine and infects people.
The CDC’s latest research has found a significant concentration of Covid in the noses and throats of vaccinated people following a breakthrough case.
Although the agency has not yet published its findings, they suggest vaccinated people infected with Covid will transmit the virus as if they haven’t developed immunity.
In the US, this means advice now directs people with weakened immune systems and anyone living with them to exercise renewed vigilance.
The CDC’s advice mirrors the UK’s, where health officials have asked people to wear masks and social distance in crowded areas and on transport.
But these findings don’t mean the vaccine isn’t worth taking, as anyone who receives both doses is markedly better off.
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Speaking to the New York Times, Frances Lund, a viral immunologist based at the University of Alabama at Birmingham in the US, said the vaccines are “beautiful”.
The vaccines work, but they don’t provide “local” immunity, according to Dr Lund.
They act by entering the bloodstream via muscle tissue and remain there awaiting potential infections.
Viruses that make their home in the nose and throat lurk in a blindspot only partially covered by vaccine-created antibodies.
They kick in when the virus attempts to leak through into the lungs.
Vaccinated people, therefore, have immunity from Covid’s latest and deadliest stages.
Therein lies the most beneficial aspect of the jab; where it doesn’t prevent infection, it reduces chances of hospitalisation or death.
Although 30,633 people caught Covid today, vaccines are the reason only 85 died.
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