Dr. Teera Woratanarat, Faculty of Medicine Chulalongkorn University Post messages via private facebook. Identifying the progress of research on omicron strains BA.2 by Lentini A et al. published a study in Sweden in medRxiv yesterday (27 Mar. 65) found that people infected with O. The BA.2 mikron has a viral load in the throat. This is twice as much as the original BA.1 strain, thus evidence explaining a phenomenon in which many countries around the world are facing a re-emergence of the now-dominant Omicron BA.2.
However, the higher the number of viruses The greater the chance of spreading. A Swedish study shows the amount of virus in the throat. which is the upper respiratory tract therefore having the opportunity to infect others easily whether from meeting, talking, mingling closely Or share food and drink utensils, including cigarettes, etc.
Meanwhile, the UK HSA has released a summary of the current knowledge of the BA.2 strain as follows:
1. Better binding to ACE2 receptors on the cell surface than BA.1, which is likely reason enough to explain its greater infectivity potential.
2. The rate of infection to others (secondary attack rate) is higher than BA.1
3. The period from the first day the first infected person has symptoms. to people infected with symptoms (serial interval) shorter than BA.1
However, even now the available data tends to show that BA.2 is the same severity as BA.1, but with greater transmission efficiency. The higher the number of cases, the higher the number of morbidity or death, so it’s very important to have regular self-defense.
“Thai now BA.2 is the main one as well. And the statistics of daily infections and daily deaths have always been ranked in the world rankings. Therefore, wear a mask, meet as many people as necessary, take a short time, avoid eating, drinking or sharing food with others. If you are unwell, inform your loved ones. separate from others and stop studying Go for a checkup to get better first. For people who have been infected before It can be re-infected, so you need to protect yourself. You should also check your health performance regularly. If something is different from the past should consult a doctor because there is a chance of long-term COVID, which can occur in almost every system of the body,” said Dr. Thira.
For the Covid-19 epidemic situation yesterday (27 March 65) around the world, the number of people infected has risen to 989,476, with 2,324 additional deaths, a total of 481,859,155 people infected with 6,147,878 deaths, of which the top 5 cases with the highest infections are South Korea, France, Vietnam, Germany and Italy. Yesterday, the number of new infections was nine of the top 10 countries in Europe and Asia and 15 among the top 20 in the world.
The number of new infections every day in the world now. from Asia and Europe Together, they accounted for 90.85% of the world, while the number of deaths accounted for 82.22%. New infections in Asia accounted for 56.48% of the world, while the number of deaths increased to 47.46%.
As for the epidemic situation in Thailand Yesterday, the number of new infections, including the Antigen Test Kit (ATK), was the 6th highest in the world and 3rd in Asia, while the number of deaths yesterday. 10th highest in the world