The latest SARS-CoV-2 news and Covid disinfection facts
As the pandemic rumbles on, we’re discovering more about the virus that’ has changed our world. Here’s a digest of Covid news stories you can trust, the truth about Covid-19.
Strict policies ‘Down Under’ seem to have worked
Thanks to New Scientist for this story. A few days after New Zealand re-elected Jacinta Ardern for a second term, on the back of her respected treatment of the Covid epidemic in her country, we’re seeing news that Australia’s super-strict measures also seem to have worked.
In July Australia brought in fresh measures to limit the number of returning air passengers after quarantine security breaches in Melbourne set the virus off again. The city endured a second lockdown, one of the world’s most strict, including a 9-5 curfew and big instant fines for those who broke it. Incoming flights still carry a maximum of 50 people, and you have to wear a face shield as well as a face mask for the entire flight unless you’re actually eating.
When you step off the plane your temperature is checked then you are quarantined at gunpoint for 14 days, not allowed to leave the hotel. If you do, you face a fine or prison. No wonder, these days, there’s zero ‘community transmission’ in Western Australia. None at all. And that’s impressive.
Testing has gone well in Australia, too. 7.4 million tests so far, a track and trace app that actually works, 875 deaths in total, and just over 27,000 cases. Well done, Aussies.
The latest on herd immunity
Thanks to New Scientist for this story, too. Can we simply let the virus rip through the population, therefore developing immunity in the population as a whole? Some say yes, others disagree strongly. In fact most scientists disagree, because letting rip will leave an unacceptably large number of deaths in its wake as well as placing more of us at risk of ‘long Covid’.
There’s also a large and growing body of evidence that supports the world’s scientists in their view that herd immunity isn’t an option.
Estimates say 60-70% of us would have to contract the virus to achieve herd immunity in the population as a whole. But that pre-supposes immunity will last long enough to be useful, and that isn’t looking likely at the moment. So far it looks like this virus leaves people who’ve had a light dose with a short immune response of a few weeks, if that, and those who’ve had a nasty bout with a slightly longer immune response. Sadly there’s no sign that once we’ve had Covid, we’re immune for life. And so far it looks like just 20% of Londoners are showing an immune response, against a landscape where science doesn’t yet know if herd immunity is even a possibility.
Can you catch Covid twice?
It looks like you may be able to catch the virus twice. In August we saw early reports of a few people getting more than one coronavirus infection, but they weren’t confirmed. Nobody has been deliberately reinfected but a pair of rhesus macaque monkeys were infected twice, once to build up an immune response, then and a second time three weeks after that. The monkeys didn’t develop the virus again. On the other hand a recent case study from The Lancet says one 25-year-old man from Nevada, USA, caught it twice and while he was poorly both times, he was much more ill the second time around.
Once your immune system has dealt with Covid, your body should create antibodies to combat the virus more effectively if you get it again. But scientists are warning that our bodies’ lack of familiarity with the virus means there’s no way to predict how well – or otherwise – our immune systems will respond to it. As far as catching the virus twice, the science community is still trying to uncover the truth. Which means it’s still much better to be safe than sorry.
And thank you to New Scientist for the next three short but sweet stories.
What’s the latest science on face masks?
A growing number of studies says face masks do work to reduce your risk of getting infected. They make infections less severe becaue they lessen the viral load you take in. They help prevent you from infecting others. And if you’re in a crowded space, indoors or out, the egg-heads recommend you always wear one!
What’s the latest progress on a vaccine for Covid?
Several vaccines have entered the Phase 3 trial stage. Dozens more are being developed. Hopes are high, but even if we get a high success rate with more than one viable vaccine, it’ll take ‘years’ to roll them out across the world.
Has the fatality rate changed?
Numbers from the UK, taken from the Intensive Care National Audit & Research, say 83% of people admitted to ICU survived the virus after 1st September, whereas before 1st September it was just 60%. But we can’t take these numbers at face value because in the early days ICUs might have turned away more borderline cases than they do these days. There’s absolutely no reason to believe the virus is getting less deadly.
Get clean, be safe, improve your bottom line
Our UVC lights provide a reliable, trusted way to clean surfaces and make them safe, messing with the DNA and RNA inside the virus so it can’t reproduce. That’s what we call a good idea, as well as a great way to save money, improve your bottom line, and help keep everyone well.









