News Will Australia experience a second wave of coronavirus?
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Will Australia experience a second wave of coronavirus?

WHO director-general Tedros Adhanom Ghebreyesus said the world was still experiencing the first wave of infection. Photo: AAP
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Wherever you are in Australia, for most of us there’s a hint of optimism in the air.

Your gym might be reopeningYou can finally get your nails doneYour kids can see their friends at school again.

After more than two months of various levels of restrictions, states and territories are cautiously rolling back measures imposed to combat the coronavirus pandemic. Some states are even fast-tracking their reopening schedules.

Globally, it’s another story.

On Tuesday, 1039 people died of COVID-19 in Brazil within 24 hours. In the United States, the world’s most infected country, with 1.6 million cases overall, 478 people died within that same period.

On the same day, the World Health Organisation’s (WHO) top health expert said the international threat of this pandemic had not ended.

In fact, on a global scale, we’re only in the middle of the beginning.

So where does Australia fit into this picture?

The world overall is still in the middle of the first wave

In a media briefing on Tuesday night, WHO executive director Mike Ryan said most of the world was still experiencing the first wave of infection — and a second wave could be yet to come.

For a second wave to occur, cases of coronavirus first have to decline across the world to a “very low level” and then pick back up again “a number of months later”, he said.

“If we look at the data from South America … for Africa, for South Asia, and for many other countries, we’re still very much in a phase where the disease is actually on the way up,” he said.

Right now, we’re not in the second wave. We’re right in the middle of the first wave globally.”

But countries could still find themselves experiencing a second peak during the overall first wave — if their cases drop and then rise again, while global cases are still on an upward trend.

“We may get a second peak in this wave,” Dr Ryan.

But Australia could be closer to the end of th-**************e first wave — if things keep going well

But Dr Ryan was careful to say some countries had successfully suppressed the virus, and may be nearing the end of their first peak.

I think it depends where you are in the world,” he said.

“We congratulate countries like Spain, who’ve managed to contain and suppress the disease transmission.

“Many other countries around the world … have continued to put in place the public health and social measures, the surveillance measures, the testing measures, and a comprehensive strategy to ensure that we continue on a downward trajectory and that we don’t have an immediate second peak.”

While Dr Ryan didn’t mention Australia by name, our successful virus elimination strategies likely place us in this group.

Yesterday, Health Minister Greg Hunt called Australia “an island sanctuary in a difficult world.”

“Whilst Australia has made progress, the world is not out of the woods,” he said.

‘This virus, if it finds an opportunity, will start an outbreak’

So, does that mean we can relax, because we’re among the lucky ones?

Wishful thinking. The answer is a definitive no.

At the same media conference, the WHO’s COVID-19 response technical lead Maria Van Kerkhove had some firm words for countries who think they’ve escaped a second peak.

“All countries need to be ready to rapidly detect cases.

“Even countries that have had success in suppression. Even countries that have seen a decline in cases must remain ready.”

Dr Van Kerkhove referenced several published and pre-print studies into COVID-19, which have looked into the number of persons among particular population groups who have tested positive.

“[They] indicate that a large proportion of the population remained susceptible,” she said.

That means that this virus, if it finds an opportunity, will start an outbreak.

“And we need to be very clear on that, and need to remain strong, remain vigilant, have our systems in place to readily detect those cases, to care for those cases, to find and trace and quarantine contacts.”

How do we prevent a second peak or  wave?

So, what does the WHO’s advice mean for Australia?

It means — as Australian authorities have consistently maintained — that Australia can and will see new coronavirus outbreaks at any time, and must be prepared to handle them.

Even though new diagnoses of coronavirus have declined far below Australia’s March peak, that doesn’t mean the disease itself is going anywhere.

There is no vaccine for COVID-19, and treatment options are still being worked on, with differing levels of success.

Australia might have reasons to celebrate from a numbers perspective, but given global knowledge about this new coronavirus is still in the very early stages, we shouldn’t celebrate too hard.

“We cannot make assumptions that just because the disease is on the way down now [in certain countries], that it’s going to keep going down, and then we’re going to get a number of months to get ready for a second wave,” Dr Ryan said.

Are we ready if there’s a second peak or second wave?

Australian authorities and the WHO largely agree about what works to suppress the spread of COVID-19.

Dr Van Kerkhove called it a “comprehensive package of finding, isolating, testing, caring for cases, tracing contacts, quarantining those contacts … empowering the population, making sure that we have all of our public health infrastructure in place”.

Health Minister Greg Hunt said Australia’s public health response was ready to respond to an outbreak.

Border protection and hotel quarantine is literally saving lives and protecting lives and will continue to be a fundamental part of our … defence,” he said.