Pune: The first images from India of what the coronavirus ( Covid-19 ) have been released. The images of the coronavirus have been caught by a team of ICMR-NIV scientists in Pune.
The images, captured using the transmission electron microscope imaging, have been published in the Indian Journal of Medical Research.
The images of Sars-Cov-2, the virus that causes COVID-19, are from the throat swab of the first laboratory-confirmed case in India reported on January 30.
The woman, among three students studying medicine in Wuhan in China, was diagnosed with COVID-19.
The gene sequencing of the samples found that the virus was a 99.98 percent match with the virus in Wuhan.
A total of seven negative-stained virus particles having morphodiagnostic features of a coronavirus-like particle could be imaged in the fields scanned. These included the round shape of the virus and a cobbled surface structure having envelope projections.
The image revealed the presence of stalk-like projections ending in round peplomeric structures typical of a coronavirus particle.
According to the article, one particular virus particle was very well preserved, showing features very typical of coronaviruses. This particle was 75 nm in size and showed patchy stain pooling on the surface and a distinct envelope projection ending in round peplomeric (glycoprotein spike on the viral surface). These bind only to certain receptors on the host cell.
According to the study, the description of a novel human coronavirus, initially referred to as the Wuhan coronavirus, is currently designated as severe acute respiratory syndrome (SARS)-CoV-2 as per the latest International Committee on Taxonomy of Viruses classification. It is probably the most recent human pneumonia virus with high outbreak potential.