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The name coronavirus is derived from the Latin word corona meaning crown, Coronaviruses are a large family of viruses that infects the lungs

Coronavirus: Coronavirus infection (COVID-19) Protect yourself and loved ones from corona virus - read more you can visit on web page

COVID 19 (Coronavirus Disease) is a contagious disease caused by a new kind of virus spread globally.

The Omicron variant of coronavirus is less likely to cause long Covid than previous variants, according to the first peer-reviewed study of its kind from the UK. Researchers at King's College London, using data from nearly 100,000 people who logged their Covid symptoms via an app, found the odds of developing long Covid after infection were 20 per cent to 50 per cent lower during the Omicron wave in the UK compared to Delta. The figure varied depending on the patient's age and the timing of their last vaccination. Long Covid, which includes prolonged symptoms ranging from fatigue to 'brain fog', can be debilitating and continue for weeks or months. It is increasingly being recognised as a public health problem, and researchers have been racing to find out if Omicron presents as big a risk of long Covid as previously dominant variants. The study from King's is believed to be the first academic research to show Omicron does not present as great a risk of long Covid, but that does not mean long Covid patient numbers are dropping, the team said. While the risk of long Covid was lower during Omicron, more people were infected, so the absolute number now suffering is higher. "It's good news, but please don't decommission any of your long Covid services," lead researcher Dr Claire Steves said, appealing to health-service providers.

British health officials on Wednesday (September 28) warned that increased circulation of flu and a resurgence in Covid-19 could lead to a difficult winter that increases pressure on the already stretched NHS. Warnings over a possible "twindemic" of Covid-19 and flu have been issued each winter since the start of the coronavirus pandemic in early 2020, but Covid restrictions that limited social contact have meant flu levels stayed low. However, the government ended coronavirus restrictions earlier this year, meaning that social contact rates have returned to near pre-pandemic norms while immunity to flu is relatively low. The UK Health Security Agency (UKHSA) said that given the risk it was important those eligible took up vaccines against Covid and flu. "There are strong indications we could be facing the threat of widely circulating flu, lower levels of natural immunity due to less exposure over the last three winters and an increase in Covid-19 circulating," said Susan Hopkins, chief medical advisor at UKHSA.

One in eight people who were hospitalised with Covid-19 between May 2020 and March 2021 were later diagnosed with myocarditis, according to major new research into the clinical long-term effects of coronavirus. The largest study of its kind to date was led by the University of Glasgow in collaboration with NHS Greater Glasgow and Clyde (NHS GGC), and followed for one year, in real time, 159 patients after they were hospitalised with Covid-19. The study also looked at why some patients suffer long-term ill health after hospitalisation with Covid-19. Until now it has been speculated that previous underlying health conditions may be linked to the severity of post-Covid long-term effects. However, this new study suggests that it is the severity of the infection itself which is most closely correlated to the severity of a patient's long-Covid symptoms, rather than pre-existing health problems. Hospitalisation with Covid-19 was found to cause a number of long-term health problems. Researchers found one in eight patients hospitalised with Covid-19 have heart inflammation, while inflammation across the body and damage to the other organs such as the kidneys was also common.

The World Health Organization says it is tracking a few dozen cases of two new sub-variants of the highly transmissible Omicron strain of the coronavirus to assess whether they are more infectious or dangerous. It has added BA.4 and BA.5, sister variants of the original BA.1 Omicron variant, to its list for monitoring. It is already tracking BA.1 and BA.2 - now globally dominant - as well as BA.1.1 and BA.3. The WHO said on Monday (April 11) it had begun tracking them because of their "additional mutations that need to be further studied to understand their impact on immune escape potential". Viruses mutate all the time but only some mutations affect their ability to spread or evade prior immunity from vaccination or infection, or the severity of disease they cause. For instance, BA.2 now represents nearly 94% of all sequenced cases and is more transmissible than its siblings, but the evidence so far suggests it is no more likely to cause severe disease.