HomeNewsWorldVietnam, lauded in coronavirus fight, reports first local case in 100 days

Vietnam, lauded in coronavirus fight, reports first local case in 100 days

A 57-year-old grandfather in the city of Danang, with no history of travel, tested positive and has been hospitalized. Health officials are tracing his contacts.

July 27, 2020 / 15:21 IST
Story continues below Advertisement

Vietnam, which had gone 100 days without reporting a case of local transmission of the coronavirus, said Saturday that a 57-year-old grandfather in the central city of Danang had tested positive. How he got the illness remains a mystery.

To prevent a wider outbreak, the Health Ministry said it was conducting “extensive screening and testing in all at-risk areas in Danang.” Officials said they had tested and quarantined people who had been in close contact with the patient and were tracing others. So far, no other positive cases have surfaced.

Story continues below Advertisement

The case of the Danang grandfather is yet another sign of how difficult it is to contain the virus even when a country has followed the best practices. The patient has no record of recent travel and appears to be a homebody who spends most of his time looking after his grandchildren.

Health officials, noting that mask use in Vietnam had become lax, urged members of the public to resume wearing them, especially in crowded places and on public transportation.

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