HomeNewsWorldFresh COVID wave sweeps Asia; New Zealand warns of pressure on hospitals

Fresh COVID wave sweeps Asia; New Zealand warns of pressure on hospitals

The renewed surge in cases, mostly of the BA.4/5 Omicron variants, provides a further challenge for authorities grappling with the economic fallout of earlier waves of the pandemic while trying to avoid extending or reintroducing unpopular restrictions.

July 14, 2022 / 15:30 IST
Story continues below Advertisement

New Zealand, which has a population of 5.1 million, has almost 69,000 currently infected with the virus. Of those, 765 cases are in hospital, which has caused increases in wait times and surgeries to be cancelled. Representative image (Source: Shutterstock)
New Zealand, which has a population of 5.1 million, has almost 69,000 currently infected with the virus. Of those, 765 cases are in hospital, which has caused increases in wait times and surgeries to be cancelled. Representative image (Source: Shutterstock)

A new wave of coronavirus infections is rapidly spreading through Asia, prompting warnings for residents from New Zealand to Japan to take precautions to slow the outbreak and help prevent healthcare systems from being overwhelmed.

The renewed surge in cases, mostly of the BA.4/5 Omicron variants, provides a further challenge for authorities grappling with the economic fallout of earlier waves of the pandemic while trying to avoid extending or reintroducing unpopular restrictions.

Story continues below Advertisement

The New Zealand government on Thursday announced free masks and rapid antigen tests as it tries to relieve pressure on the country's health system, which is dealing with an influx of both COVID and influenza patients during the southern hemisphere winter.

"There's no question the combination of a spike in COVID-19 cases and hospitalisations, the worst flu season in recent memory and corresponding staff absences are putting health workers and the whole health system under extreme pressure," Ayesha Verrall, Minister for COVID-19 Response, said in a statement.

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