The trend line of confirmed COVID-19 cases continues to increase — with three largest counts coming in over the last three days.
The World Health Organization (WHO) has reported another record in the increase in the number of confirmed coronavirus cases over a 24-hour period, at over 2.3 lakh.
The United Nations' health agency said on July 12 that the United States again topped the list among countries, with more than 66,000 cases recorded.
The figures do not necessarily account for delays in reporting of cases, and are believed to far underestimate actual case totals.
Frequently Asked Questions
A vaccine works by mimicking a natural infection. A vaccine not only induces immune response to protect people from any future COVID-19 infection, but also helps quickly build herd immunity to put an end to the pandemic. Herd immunity occurs when a sufficient percentage of a population becomes immune to a disease, making the spread of disease from person to person unlikely. The good news is that SARS-CoV-2 virus has been fairly stable, which increases the viability of a vaccine.
There are broadly four types of vaccine — one, a vaccine based on the whole virus (this could be either inactivated, or an attenuated [weakened] virus vaccine); two, a non-replicating viral vector vaccine that uses a benign virus as vector that carries the antigen of SARS-CoV; three, nucleic-acid vaccines that have genetic material like DNA and RNA of antigens like spike protein given to a person, helping human cells decode genetic material and produce the vaccine; and four, protein subunit vaccine wherein the recombinant proteins of SARS-COV-2 along with an adjuvant (booster) is given as a vaccine.
Vaccine development is a long, complex process. Unlike drugs that are given to people with a diseased, vaccines are given to healthy people and also vulnerable sections such as children, pregnant women and the elderly. So rigorous tests are compulsory. History says that the fastest time it took to develop a vaccine is five years, but it usually takes double or sometimes triple that time.
Still, the trend line of confirmed cases continues to increase — with three largest counts coming in over the last three days.
The previous record was July 10, with more than 2.2 lakh newly recorded cases worldwide in a 24-hour span.
Overall, the WHO has counted more than 1.2 crore confirmed cases and more than 5.6 lakh deaths from COVID-19.Click here for Moneycontrol’s full coverage of the novel coronavirus pandemic