SSC VB “Vector” for the first time has published photographs of the Delta variant of coronavirus, taken with an electron microscope camera.
The image is posted on the resources of RIA Novosti.
“The virus was artificially grown on a culture of epithelial cells of the kidney of the African green monkey,” – said in the message.
Ultrathin sections of cells embedded in epoxy resins were stained according to the standard method of sample preparation for electron microscopy, refined in the center.
According to the WHO, the Indian variant (Delta), named B.1.617, was identified in October 2020. It is distinguished by a shortened incubation period and increased stress on the human body. In addition, the period of its elimination from the body has lengthened, which makes it difficult for physicians to determine the moment of recovery.
The main symptoms are headache, runny nose, sore throat, high fever. Moreover, usually the sense of smell does not disappear and there is no cough. Also, according to experts, this type of coronavirus is characterized by abdominal pain, vomiting and profuse nasal discharge – as with rhinovirus. Rapid fatigue, feelings of depression and despondency are possible.
On October 19, 2021, the Delta variant was found in 193 states and territories, and it became dominant in the world. In Russia, the first isolated cases were registered in April 2021. In September, this variant of SARS-CoV-2 accounted for 97 percent of all mutations that have been sequenced in the country.