On the 13th of March, 2023, the Association of Professor Dr. Thira Worathanarat or “Doctor Thira“Chulalongkorn University Faculty of Medicine Facebook post about the issue”COVID 19“Deciding that yesterday worldwide there were 50,331 more people, 211 more deaths, a total of 681,528,196 people, and a total of 6,811,893 deaths.
The top 5 most infected with COVID-19 are
- Russia
- Taiwan
- Mexico
- Japan
- France
As of yesterday, in the number of new infections, countries from Europe and Asia occupied eight of the top 10 and 18 of the top 20 globally.
The number of new infections per day worldwide is currently from Asia and Europe Together, accounting for 77.07 percent of the world, while the number of deaths accounts for 72.98 percent.
Update information about COVID-19
1. The period of time when the virus was inoculated. And the duration of the PCR examination showed positive results after infection.Omicron species
Wu Y and colleagues from Peking University conducted a systematic review of the research and a meta-analysis.
They found that after infection The median time to incubate the virus from upper respiratory tract secretions was about 6 days (5.16 days) (Figure 1), and the longest time the virus could be cultured was 15 days.
Although the average period canPCR The positive result was 11 days (10.82 days) (Figure 2), and the longest time a positive result could be detected was 23 days.
…The results of this study help us understand the nature of viral infection.COVID 19 Omicron species Which, in terms of fostering the infection, is linked to the risk that an infected person will be able to infect others. This is in line with previous advice to self-isolate for seven to 10 days to reduce the risk of transmission.
Regarding the positive PCR test, it is found that everyone is currently using a sensitive test kit or ATK, which has the ability to detect less positive results than PCR and requires a higher viral load than PCR to obtain a positive result. and vice versa Once positive, it tends to turn negative faster than PCR.
2. Vaccination to reduce the risk of serious illness and death
Maltezou HC et al from Greece. The study followed around 6,500 healthcare professionals between 2021 and 2022.
People who have been fully vaccinated have been found to reduce the risk of serious illness requiring hospitalization.
However, medical personnel who become infected after vaccination breakthrough infection usually occurred about 4 months (16.2 weeks) after the booster vaccine (Figure 3).
when analyzing the risk of infection The average increase is around 7% each week after the booster dose.
…This research suggests the effectiveness of vaccines in reducing the risk of serious illness if infection occurs The global epidemic is still not quiet.
to Thai us
Should live a conscious life, not careless, always protect yourself.
Adjust the environment for better ventilation, at work, at school, when eating, drinking and travelling.
wearing a mask correctly will greatly reduce the risk.COVID 19 and PM2.5
refer
1. Wu Y et al. Duration of viable virus shedding and polymerase chain reaction confirmation of the SARS-CoV-2 Omicron variant in the upper respiratory tract: a systematic review and meta-analysis International Journal of Infectious Diseases. April 2023.
2. Maltezou HC et al. Timing of last COVID-19 vaccine dose and breakthrough SARS-CoV-2 infections in fully vaccinated (boost) healthcare personnel. Journal of Hospital Infection. February 2023.
