35 Years of Research Into Coronavirus Infections Show Long-Term Immunity Is Unlikely

Even once a person gets sick with a coronavirus that's no guarantee they won't contract it again, new research suggests.

While SARS-CoV-2 is the coronavirus that has the world's attention right now, there are numerous others that we've known about for decades, which are not only known to infect humans, but are highly seasonal.

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Is the Coronavirus ‘Airborne’ or Not?

Many of the precautions put forth by public health organizations are based on the belief that COVID-19 isn't airborne—wash your hands, avoid crowded indoor spaces, wear a mask, and practice social distancing—but some researchers are now challenging this notion.

Right now, it is widely accepted that the novel coronavirus is carried by the droplets that we expel when we talk or cough. These droplets do travel through the air, but aren’t considered “airborne” because they typically fall out of the air immediately and land within about two meters. Hence the recommended 6-feet social distancing guidelines.

But smaller than droplets are aerosols — tiny particles that, as a rule of thumb, are under 5 microns in size.

If the virus was really just carried by droplets, there are some instances of infection that some scientists say shouldn’t have been possible.

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Microscopic attack- Lacrymaria olor, a vicious, predatory, single-celled organism attacking a smaller single-celled organism
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