With the advance of the new variants, international health authorities recommend do not relax prevention measures like the use of masks or the tests PCR for people who are vaccinated.
One of the most worrying is the Delta, first identified in India. The director general of the World Health Organization (WHO), Tedros Adhanom Ghebreyesus described this Friday to the Delta variant What “The most transmissible of the variants identified so far” and warned that “it is spreading rapidly among unvaccinated populations.”
The recommendation of continue to wear a mask despite being vaccinated it becomes even more important in areas where there is still community transmission of coronavirus. «People have to continue wearing mask, ventilate spaces, keep physical distance or avoid crowded areas. This is extremely important even for those who have been vaccinated in areas where there is still community transmission ”, explained the WHO assistant for Access to Medicines and Vaccines, María Ángela Simao.
On USAThe Centers for Disease Control and Prevention (CDC) said in May that Americans with the full guideline would not have to wear a mask indoors or maintain a safe distance. However, some states weigh backtrack and re-demand the masks inside.
Los Angeles County health officials have recommended that all residents wear a face mask in indoor public spaces, regardless of whether or not they have been vaccinated against Covid-19 due to the increased circulation of the highly communicable Delta variant.
According to the CDC, Delta variants are now responsible for about one in five new infections nationwide. In addition, it could quickly become the dominant version of the virus in the United States, warned CDC Director Rochelle Walensky, Reuters reports.
But the recommendations are not limited to just masks. The WHO recommended this Monday to perform PCR on those vaccinated with suspected Covid-19 infection. In an update to its guidance on strategies, the agency notes that “there is currently little evidence available on the extent to which partially or fully vaccinated or previously infected people can contribute to transmission. Furthermore, there is a permanent risk of vaccine escape and reinfection due to SARS-CoV-2 variants with altered immunogenic properties. ‘
Thus, it recommends that suspected cases among people with immunity undergo PCR tests and, if they are positive, be referred to sequencing, reports EP. “If it is routine practice to test contacts, asymptomatic contacts who are fully vaccinated or have a history of previous infection can also be tested based on clinical criteria,” they argue.