Delta Variant Can Infect In Seconds : How To Prevent That?

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The Delta variant of COVID-19 has been shown to infect in mere seconds!

Find out what’s happening, and what we can do to prevent that!

Updated @ 2021-07-16 : Added more preventive measures

Originally posted @ 2021-06-29


COVID-19 Delta Variant Can Infect In Seconds!

The Delta variant of COVID-19 is known to be significantly more infectious, but what exactly does that mean?

Details from two recent cases in China and Australia reveal that the Delta variant can infect people in mere seconds!

Guangzhou, China

On 21 May 2021, one lady (Huang) contracted COVID-19 from a friend, Song, when they had a conversation for just 1 minute 40 seconds.

Four days later, Huang entered the bathroom of a restaurant, when another lady (Liu) walked in. They both said they did not have any physical contact inside.

However, just sharing the same bathroom for 14 seconds was sufficient for Huang to infect Liu.

The Shenzhen Center for Disease Control and Prevention (CDC) confirmed that they were both infected with the Delta variant of COVID-19.

Sydney, Australia

In the middle of June 2021, one person was infected with the Delta variant by a stranger passing by within 10-15 cm at the Bondi Junction Westfield. It was a fleeting close contact that was also captured on CCTV.

NSW Chief Health Officer Kerry Chant called it a “momentary crossover” :

We actually have CCTV footage of the encounter and it is basically a crossover of individuals. They are clearly facing each other but it is literally someone moving across from each other for a moment, close, but momentary. 

Queenlands Chief Health Officer Jeannette Young later said, “If you remember at the start of this pandemic, I spoke about 15 minutes of close contact being a concern. Now it looks like it’s 5 to 10 seconds.

COVID-19 Delta Variant Can Infect In Seconds, But...


How COVID-19 Delta Variant Infected In Seconds

The two cases above are very troubling, but most media only reported on the cases without delving deeper.

A closer analysis of the facts of those two cases reveal a common factor not mentioned in most news reports – the lack of face masks.

In the Guangzhou case, Huang was not wearing a face mask in the bathroom. The CCTV video showed her putting it on a few metres after she left the bathroom.

In the Sydney case, neither were wearing face masks as far as I can tell, because there was no requirement to wear one in Sydney at that time.

NSW premier Gladys Berejiklian immediately announced that face masks would be mandatory on public transport in the greater Sydney area for 5 days, but it was not a requirement in other public places.

It seems clear that these Delta infections only occurred in seconds because at least one party did not wear a face mask.

Delta Variant Can Infect In Seconds : How To Prevent That?


Delta Variant Can Infect In Seconds : How To Prevent That?

While the Delta variant is more infectious against COVID-19, it is fundamentally the same virus.

So we can still take the same COVID-19 precautions to prevent infection by the Delta variant :

Get Vaccinated ASAP!

It is very important to quickly VACCINATE against COVID-19, as current vaccines offer robust protection against the Delta variant.

Wear Face Masks

It is critical that we not only wear a face mask while outside at all times, we should try to double-mask if we are not wearing an N95 / KN95 mask.

Wear A Face Shield / Eye Wear

We should also wear a face shield if possible, or some kind of eyewear, as COVID-19 can infect through the eyes as well.

Double face mask full

Improve Ventilation

It is now known that COVID-19 can spread through aerosol – think of it wafting around like cigarette smoke.

This is not so much of a problem outdoors, but it is a critical problem indoors.

Public places need to be better ventilated, or have ventilation systems that rapidly refreshes and filters the air inside rooms.

Maintain Physical Distance

Staying 1-2 metres apart is probably okay outdoors, if everyone is wearing a face mask. But it is no longer good enough indoors.

We need to expand our physical distance from other people indoors – keep at least 3-4 metres from other people.


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