NZ likely to be hit with second wave during winter: Covid-19 modeller

As immunity wanes, people who have already had Covid-19 could get it again, modeller Michael Plank says.

University of Canterbury professor, Michael Plank

University of Canterbury professor Michael Plank says immunity from the virus after infection. Photo: Supplied.

University of Canterbury professor Michael Plank told Morning Report people’s immunity from the virus after infection will likely weaken in the coming months.

Plank said given that there was an increase in infections during the months of February and March, as immunity wanes New Zealand could be hit with a second wave.

“Waning immunity means that over time people will become increasingly susceptible to getting reinfected and this could lead to a second wave sometime in winter or spring,” he said.

Plank said the current increase in cases may be a result of easing of restrictions and people mixing socially.

He said the second wave was likely to be smaller than the number of cases in the first one.

However increase in hospitalisations and deaths depends on the age group that gets infected.

“If we start to see increasing numbers of infection in the older group in the second wave that could put the hospitalisation up to the sort of levels we saw in March and April,” he said.

On Tuesday the country surpassed a million cases since the pandemic began more than two years ago.

US crosses more than one million deaths from Covid-19

The White House announced that the United States had passed more than one million deaths from Covid-19.

It is the highest official toll in the world but the World Health Organisation said true numbers could be higher in other countries.

President Biden described it as a tragic milestone that people cannot grow numb to and that the US must remain vigilant against the pandemic.

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