What's the difference between T0 and intraday alpha?

According to WHO, besides Delta, there are three other variants that attract global attention? Among them, Alpha is the first mutant virus of B. 1. 1.7 found in the UK, which led to the UK strengthening containment measures and border control at home and with other countries before the end of 2020. However, with the constant changes in COVID-19, 24 Greek letters may not be enough. In this regard, the World Health Organization epidemiologist Maria? In an interview, Van Kehoff said that if we run out of Greek letters, we will consider naming COVID-19 mutant virus after a constellation.

Novel coronavirus family can continue to reproduce and grow, because novel coronavirus is a single-stranded RNA virus. Because of the high rate of gene recombination among different strains, mutations are more likely to occur. Compared with the first generation of novel coronavirus? The spread rate of variants is 40% to 70% higher. Although countries urgently announced the temporary severance of relations with Britain, the Alpha variant quickly spread to many countries around the world.

But because of Alpha's stronger communication ability, in just a few months, Delta variant replaced Alpha's dominant position. Secondly, Beta variant is the first B. 1.35 1 mutant virus found in South Africa, which caused the second round of epidemic in South Africa and then spread to other countries in the world. Compared with the high transmittance of α and δ, β variants can avoid neutralizing antibodies. In addition, several studies have shown that beta variants may lead to higher serious diseases and mortality.

For example, in South Africa, compared with the first wave caused by primitive COVID-19 in July 2020, in order to? During the second wave of COVID-19 epidemic, the probability of death of infected people after hospitalization increased by about 30%. ? Because it is? The close relatives of the variants have similar mutations, so their effects are similar to those of β, because the spreading power increases, which leads to more serious symptoms and stronger resistance to vaccine and antibody treatment. ?