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Better known than COVID-19 It is just one virus that is a new strain of the coronavirus family. But nowadays, when the coronavirus is mutated so far we call it "COVID-19" and there are still many more subspecies based on their origin. How many species are there today? Which breeds are the most severe and dangerous? Let's see.

In Thailand, there is a COVID-19 virus. How many strains of the outbreak
According to the Medical Genome Center Faculty of Medicine Ramathibodi Hospital Mahidol University Previously, there were two main strains of COVID-19 in Thailand, B.1.36.16, which began in early 2021.It is thought to be endemic to Thailand, replacing the original A.6 strain. In 2020, found in many provinces Most infected people do not have symptoms. (asymptomatic)

Another strain that is currently widespread is COVID-19. The British B.1.1.7 mutant, which had just begun to spread in Thailand at the end of March 2021, is more easily contagious. More violent There is a higher rate of morbidity and mortality than the original breed.

But most recently (21 May), the outbreak of B.1.6.7 or Indian strain was found. At the main workers camp, 15 workers were found infected with the virus.

FPO revealed the Laksi worker camp A person infected with COVID-19 has been found. Indian breed, 15 people
Compare all strains of "COVID-19" virus.
The L-strain 2019 coronavirus, which originated in Wuhan, China, was discovered in Dec 2019 and is separated into different strains including S, L, G, V, GH, GR, O, B follows

Species S (Serine): started from China. The first wave of epidemic in Thailand in March 2020
The L (Leucine) strain: It has more offspring than the S species, especially when reaching Europe outside of China.
Species G (Glycine): Progeny from species L is easily evolved according to the principle of evolution. Widely distributed worldwide
Species V (Valine): They are descendants of the L species.
The GH (Histiddine) strain is a descendant from strain G.
Species GR (Arginine): is a descendant from strain G.
Species O: Infrequent mutants combined.
Species B or SARS-CoV-2 VUI 202012/01 of British mutant origin.
Coronavirus, mutated strains
Strain B.1.1.7 (GR, G) or British breed
First encountered: England in September. By 2020, it spread widely in the UK and more than 50 other countries.

Characteristics: Virus skin has mutations. Better grip on human cell surface

Infection rate: Infestation is 40-90% faster than traditional strains.

Violence: Prof. Dr. Prasit Wattanapa Dean of Faculty of Medicine Siriraj Hospital Mahidol University found that the morbidity and mortality rates were 1.65 times higher than other strains. The patient has pneumonia. Need more intubation And most people with severe symptoms take just 7-10 days before they die. And with a B.1.351 strain-like mutation, reducing vaccine efficacy.

Species B.1.351 (GH, G) or South African strains.
First encounter: South Africa, December 2020

Characteristics: N501Y protein thorn, E484K mutated. Viruses better capture cells. The infection is spread easily.

Transmission rate: Infection 50% faster than the original strain.

Severity: Decreases antibody efficacy. Making it easy for people to get infected Good escape from immunity May reduce the effectiveness of the vaccine and Dr. Yong Phu Worawan, head of the Center of Specialization in Clinical Virology. Department of Pediatrics Faculty of Medicine Chulalongkorn University Revealed that this species is being epidemic in neighboring Malaysia that it is fearful that it can enter Thailand in the south. Because there are borders to each other

Strain P.1 (GR)
First encounter: Brazil, December 2020

Special characteristics: thorn protein N501Y, K417T, E484K mutated.

Infection rate: Infection 2.5 times faster than the original strain, or approximately 25-60%.

Severity: Good adhesion to human body cells. Reduce the effectiveness of antibodies Plasma or the human immune system binds less to the virus. It was the cause of the second outbreak in Brazil. The death toll is high. And more than half the age of under 40 is a more serious breed than the others. Because it can destroy the immune system of people who have been infected with COVID-19

B.1.6.7 strain or Indian species
First encounter: Nagpur, Maharashtra, India, December 2020

Characteristics: The spines of several viral particles are mutated. It is a double mutant.

Infection rate: Infects 20% faster than the original strain.

Severity: The virus spreads quickly. The infected person has worsening symptoms. Including the virus can evade immunity that has been infected before However, experts found that the Indian virus may not be as deadly or as problematic as South Africa, Brazil, and England