The Delta variant first spotted in India is currently the biggest concern. It can infect more vaccinated people than previous strains.
Currently, Delta is a dominant variant globally with a rapid spread, causing many countries to fall into a serious health crisis. Delta mutations are currently reported in 132 countries and territories around the world, and are a major concern in many countries.
The Delta variant has plunged the health system in Indonesia into a serious crisis.
The Delta variant is worrying not because it makes infected people worse, but because it’s easier to spread, increasing infections and hospitalizations in unvaccinated people.
Delta has also been shown to reduce the effectiveness of the first dose of the Covid-19 vaccine, although the full two doses still provide high protection from severe illness.
The first case of Lambda variant was recorded in December 2020 in Peru. This is a new potential threat. However, some infectious disease experts say this variant is waning.
According to the WHO, mutations of this variant can increase transmissibility or increase resistance to “neutralizing antibodies”.
WHO lists Lambda as a variant of interest: it carries mutations that are suspected of increasing transmissibility or causing more severe disease. However, this still needs further research. Laboratory studies have shown that Lambda has mutations that are resistant to vaccine-produced antibodies.
Many new mutations of Covid-19 appeared, causing concern to scientists.
Currently, Lambda appears most in South America. According to the Pan-American Health Organization (PAHO), Lambda variant caused nearly 82% of Covid-19 cases recorded here in May and June 2021.
B.1.621, first detected in Colombia in January, is listed as a variant of concern by the European Center for Disease Prevention and Control. This strain carries many mutations that can increase infection and weaken the immune system.
Anthony Fauci, director of the US National Institute of Allergy and Infectious Diseases. Recently, many people who are not vaccinated will create conditions for the virus to spread rapidly and mutate into many new variants that are resistant to current vaccines.
The more dangerous variant in the future affects not only unvaccinated people but also those who have been vaccinated, Fauci said.