Research

London : About 65 per cent Omicron cases are from reinfection, according to a study based in England.The study led by Imperial College London researchers found that almost two out of every three Covid-positive participants reported having…

Jerusalem: People who have both been vaccinated and had Covid-19 are less likely to report fatigue and other health problems seen post Covid, than unvaccinated people, according to a study based in Israel.The study, not yet peer reviewed,…

New Delhi : Individuals infected with Omicron have significant immune response which could neutralise not only Omicron, but also other variants of concern, including the most prevalent Delta variant, an Indian Council of Medical Research…

New York : Two forms of immunity breakthrough infections following vaccination or natural infection followed by vaccination provide roughly equal levels of enhanced immune protection, finds a study.The study, published online in the journal…

Delhi : While Covid-19 has primarily been a respiratory disease, about 90 per cent of people with moderate to severe infections have lasting effects on the heart, said experts here.Covid affects lungs the most, but studies have shown there…

London : The Omicron variant of Covid is highly contagious but is known to cause less severe disease than Delta. This is after being better at escaping immune protection by vaccinations and previous infections. However, the reasons for this…

Hong Kong : Despite low absolute risk, there is an increased relative risk of carditis a type of heart inflammation associated with Covid vaccine developed by US drugmaker Pfizer and China's CoronaVac, researchers have found.The findings,…

New Delhi : About 9 in 10 people have lost some degree of vision during the last two years of Covid pandemic, health experts said on Monday.It is because most of them skipped their regular eye check-ups and follow-ups due to…

New York : The "nocebo effect" accounted for more than two-thirds of the common side effects people experience after a Covid-19 vaccination rather than the vaccine itself, according to a new study.The placebo effect is the well-known…

London : About 50 per cent of people infected with Covid-19 during the first wave of infections in 2020 may have long-term and even permanent changes to their sense of smell, according to preliminary research from Sweden.From the early…