Moneycontrol
HomeNewsTrendsHealthCoronavirus outbreak: Official Chinese death toll reaches 636, confirmed cases at over 31,000
Trending Topics

Coronavirus outbreak: Official Chinese death toll reaches 636, confirmed cases at over 31,000

Japanese Health Minister Katsunobu Kato said that 41 more people on-board the docked cruise ship tested positive for coronavirus, taking the total number of infections in Japan to more than 80

February 07, 2020 / 09:15 IST
Story continues below Advertisement

Representative image

Confirmed deaths due to the novel Coronavirus (nCov) on mainland China has touched 636, with total confirmed cases over 31,000, health officials said on February 7.

Deaths recorded on February 6 were 73, of which Hubei province (where Wuhan is situated) alone reported 69 deaths. Jilin, Henan, Guangdong and Hainan provinces reported one death each, China's National Health Commission said.

Story continues below Advertisement

Among the deceased in Wuhan was Dr Li Wenliang (34), one of the eight whistleblowers who raised alarm about the disease. Li was the first to publicly report about the infections in Wuhan in December 2019.

Another 3,143 new infections were also reported on February 6, taking the total number of confirmed cases to 31,161. As many as 31 provincial regions have reported positive for nCov cases, the commission said.

COVID-19 Vaccine
Frequently Asked Questions

View more

How does a vaccine work?

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.

How many types of vaccines are there?

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.

What does it take to develop a vaccine of this kind?

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.
View more
+ Show