The Doctors of the Therapeutic Clinic of the Medical School of the National and Kapodistrian University of Athens Theodora Psaltopoulou, Giannis Danasis, Panos Malandrakis and Thanos Dimopoulos (Rector of EKPA) summarize the most important baseline data for the coronavirus Delta mutation.
The highly contagious delta variant of SARS-CoV-2, also known as B1617.2, was recognized in India in October 2020. He is now the dominant figure in the US and many other countries.
Basic information about the Delta mutation
It is transmitted quickly. According to the latest data (4 August 2021), the delta variant has reached more than 130 Countries. It has already surpassed the alpha variation in the number of COVID-19 cases in many of these countries, including the US. The variant is believed to be against 55% to 90% more contagious than previous variants of SARS-CoV-2.
Researchers are still not entirely sure why the delta variant is much more contagious than other. They believe that changes in the delta variant protein may facilitate the entry of the virus into human cells. Another early study suggests that a mutation in the delta variant may help the virus better combine with human cells once it attaches. In this way, the virus is able to infect more cells and escape the action of the immune system.
It seems to affect younger people more often. In the UK, studies have shown that children and adults under 50 years ago they had 2,5 times more likely to be infected by the delta strain of SARS-CoV-2.
The symptoms seem to be more intense and appear faster. People may be more likely to end up in the hospital if they have the delta variant. Studies suggest that it may be almost twice as likely to be hospitalized as the alpha variant.
The main symptoms
Nasal runny nose
Cough is reported less frequently and olfactory loss is no longer among the top 10 more common symptoms. Researchers worry that people may confuse symptoms with a common cold and avoid quarantine, which can help spread the delta strain.
How to protect ourselves
Vaccination is the best prevention measure. According to available data, Both doses of Pfizer-BioNTech vaccine provide protection against 79% against delta infection with the SARS-CoV-2 delta. It is also particularly important that it provides protection against 96% from the need for hospitalization if a vaccinated person becomes infected with the new strain. Two doses of AstraZeneca vaccine are against 92% effective in preventing hospitalization due to delta strain infection.