The delta variant is the most contagious mutation of the new coronavirus and accounts for more than 50% of all new cases in the United States in July.
Recovery from a previous COVID infection provides minimal antibody protection against the variants.
Studies have shown that the effectiveness rates of the two-dose Pfizer vaccine against the delta variant range from 64% in Israel, known to have performed huge amounts of testing, to 79% in Scotland and 88% in the UK. United.
It only takes seconds for the delta to spread, and its patients, who are usually younger, are often sicker by the time they arrive at the hospital. Unlike the original strain, which caused predominant symptoms of fever, cough, and loss of taste and smell, common symptoms of the delta variant – which carries twice the risk of hospitalization – are ailments headache, sore throat, runny nose and fever.
Pictured: Electron microscope image of COVID-19 (yellow) emerging from the surface of a patient’s cells (blue / pink)