COVID vaccines have proved to be magnificent successes, dramatically decreasing the number of cases, hospitalizations and deaths. However, there has been uncertainty about whether vaccinated people who still get...
Upon first inspection, the mutations in the highly contagious delta covid variant don’t look that worrisome. For starters, delta has fewer genetic changes than earlier versions of the coronavirus. “When...
Around a third of people who have had COVID-19 experience symptoms lasting 12 weeks or more, including fatigue, “brain fog,” and skin rashes, collectively known as long COVID. Other symptoms include difficulty sleeping...
A mixed vaccination of first AstraZeneca and then a Pfizer COVID-19 shot boosted neutralizing antibody levels by six times compared with two AstraZeneca doses, a study from South Korea showed. The study involved 499...
Science shows that even the most serious side effects for any vaccine, including COVID-19, occur within just a few weeks. Seven months after the U.S. began administering COVID-19 vaccines, the latest figures from the...
As soon as mRNA vaccines demonstrated startling efficacy against SARS-CoV-2 and began rolling out late last year, the virus revealed its slippery nature. The mRNA vaccines now in use are based on early SARS-CoV-2...
The corona pandemic and the SARS-CoV-2 virus are just two examples of the fact that in most cases there is no antidote to viral infections. And even vaccinations do not always provide complete protection. Unlike...
The second dose of a COVID-19 vaccine induces a powerful boost to a part of the immune system that provides broad antiviral protection, according to a study led by investigators at the Stanford University School of...
A vaccine to protect against infection with hepatitis C could be in use within 5 years, says Professor Sir Michael Houghton, who won the Nobel Prize for Medicine and Physiology along with three other scientists for...
“We’re in the midst of a growing two-track pandemic where the haves and have-nots within and between countries are increasingly divergent”, underscored Tedros Adhanom Gebreyesus. He explained that although the Delta...