Virology and Scientific Advances

In the early stages of the pandemic, a few variants of concern easily gained an evolutionary advantage and spread easily around the world. When variants such as Alpha, Delta emerged, they easily spread around the world. One variant easily outperformed the other variant in a population and caused a new wave of Covid. However, Beta and Gamma variants could not spread to the whole world due to the faster transmission of the Alpha variant. The Alpha variant was destroyed by the Delta variant.   But after Omicron, the number of variants of concern started to increase. Most of these variants are very contagious; we are now watching the evolutionary race of different variants. BA.1.1, BA.2, BA.2.2, BA.2.8 and now BA.2.12.1, BA.4 and BA.5. BA.2.2 had a chance to spread in Hong Kong, BA.2 had a chance to spread in England, and BA.2.8 had a chance to spread in Scotland; and then serious waves were seen around here. For a variant to cause a surge in a population, it must first tak

Covid-19 is not just a lung-damaging disease. Covid-19 damages many organs and systems.  We must take precaution against Covid-19 for humanity. The incidence of Long Covid in Covid cases is 40% for some symptoms, 30% for some symptoms, 20% etc. The world is facing a virus that leaves its Long Covid sequelae and most likely infects T-lymphocytes. The increased ACE2 affinity after the Omicron variant of SARS-CoV-2, its ability to infect cells by endosomal way, show us the risk of increasing Long Covid cases. It has been 3-5 months since the Omicron BA.1 and BA.2 outbreaks. And at this point, Long Covid cases have increased a lot and caused a human tragedy. There are so many people suffering from Long Covid sequelae that the number of people who can work as an economic workforce is decreasing. The newly identified variants of concern BA.2.12.1, BA.4 and BA.5 are spreading rapidly all over the world. There may be new pandemic waves originating from these variants in the coming period. We m