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Emmanuel Profile picture
@ejustin46
Aug 1, 2024 • 9 tweets • 3 min read • Read on X
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SWIMMING and COVID-19 🤔

We believe there are three hypotheses that could explain the infection among the swimming teams:
A. The virus may be present in the water of the swimming pool.
B. The virus might be circulating in the swimming camp due to inadequate ventilation... Image
3. C. The virus could remain stable at the pool as a result of chemical reactions, especially involving chlorine.

A. Regarding the presence of the virus in water which is also chlorinated, the likelihood is nearly zero.
4. B. Regarding the presence of the virus in the swimming camp,
it is difficult to answer in the absence of reliable information on ventilation systems.
This hypothesis seems to us the most probable.
5) The 3rd very interesting hypothesis is based on the studies carried out by @ukhadds Image
6) We highly recommend his study.
"Differences in airborne stability of SARS-CoV-2 variants of concern is impacted by alkalinity of surrogates of respiratory aerosol"
royalsocietypublishing.org/doi/10.1098/rs…
Image
7) The study showed that differences in SARS-CoV-2 aero-stability correlate with alkalinity, not salt concentration. Acidic air increases virus stability, while alkaline conditions rapidly inactivate it, highlighting importance of ventilation in reducing airborne transmission. Image
8) Finally, there is this older study :
"Swimming pool, respiratory health, and childhood asthma: Should we change our beliefs?"

which showed that chlorinated pools may negatively impact respiratory health, especially in asthmatic and elite swimmers ... onlinelibrary.wiley.com/doi/10.1002/pp…
Image
9) ...due to exposure to chlorine by-products. Effects on recreational and infant swimmers are less clear, requiring further research to establish causal links between pool attendance and asthma development.
10) Regardless of the contributing factors, these infections among elite swimmers highlight that the virus is still spreading rapidly across the globe.

Thanks for reading and great thanks to @ChristinaVirgil for her questions and shared information.

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More from @ejustin46

Emmanuel Profile picture
Apr 29
Why is Identifying "Non-Trivial SARS-CoV-2 Population Structure within Hosts" Important for Understanding SARS-COV-2 Evolution and the Emergence of New Variants?

journals.plos.org/plospathogens/…Image
2) The "non-trivial population structure" refers to the viral population within a host consisting of two or more distinct, independently evolving subpopulations, rather than a single, homogeneous population. Image
3) The key points about non-trivial population structure are:
▶️ It was relatively common, found in 5 out of the 9 chronic SARS-CoV-2 infection cases examined.
▶️ It was more prevalent in severely immunocompromised individuals compared to those not significantly immunocompromised Image
Read 7 tweets
Emmanuel Profile picture
Apr 26
No, Omicron is not the "humanized" SARS-COV-2 !

(Explanation in simple terms)
biorxiv.org/content/10.110…Image
2) Viruses are not living things. They are tiny particles that can only make copies of themselves inside the cells of living things, like humans. When a virus makes copies of itself, it doesn't always make perfect copies.
3) Sometimes, little mistakes happen, and the new virus has a small change, or mutation, in its genes.

Most of the time, these mutations don't do anything useful for the virus. But every now and then, a mutation might happen that makes the virus better at infecting people. Image
Read 7 tweets
Emmanuel Profile picture
Apr 26
"What if humans had sent SARS-COV-2 into space, or even brought COVID-19 along for astronauts?"

biorxiv.org/content/10.110…Image
2) This study looks at the risks of COVID-19 for people traveling to space.

Space travel is becoming more common, with over 600 people having gone to space. But COVID-19 could be a big problem for astronauts in the unique environment of space. Image
3) The study aims to understand how COVID-19 might behave differently in space compared to on Earth.

The researchers reviewed studies on other airborne diseases in space. They found that some diseases, like Epstein-Barr virus and Serratia bacteria ... Image
Read 6 tweets
Emmanuel Profile picture
Apr 24
From Lung Damage to Gut Dysbiosis:
The Lasting Implications of SARS-CoV-2 Variant-Specific Microbiome Changes (From Wuhan strain to Omicron)
labanimres.biomedcentral.com/articles/10.11…Image
2) The Wuhan strain of SARS-CoV-2 caused serious damage to the lungs of infected mice. The mice had a very high chance of dying from this strain. The researchers also looked at the bacteria in the lungs and guts of the infected mice. Image
3) The Wuhan strain increased harmful bacteria like E. coli in the lungs. This can make the lungs more prone to other infections.

The Omicron variant caused different changes in the gut bacteria of the mice. It increased certain bacteria linked to inflammation in the gut. Image
Read 5 tweets
Emmanuel Profile picture
Apr 23
What are GAMMA CORONAVIRUSES ?
And why did we decide to talk about it? Image
Image
2) A brief reminder :

▶️ SARS-CoV-2 belongs to the family Coronaviridae, is classified as a coronavirus and is responsible for COVID-19
▶️ Bird Flu refers to various strains of the influenza virus, particularly those in the Orthomyxoviridae family including H5N1 and H7N9. Image
3) ▶️ Gammacoronavirus belongs to the family Coronaviridae like SARS-COV-2.

Some notable gammacoronaviruses include:
- Infectious Bronchitis Virus (IBV): A major pathogen in poultry responsible for respiratory disease and reduced egg production. Image
Read 10 tweets
Emmanuel Profile picture
Apr 21
A TREATMENT that Could Finally END Long COVID Suffering ?

This isn't the first time a treatment has been announced, and as millions continue to struggle with long Covid, we need to remain both cautious and hopeful 🤗 Image
2) Researchers at WEHI announced that they discovered a new drug that can stop long COVID symptoms in mice. This drug is more effective than the current top treatment, Paxlovid, for both long COVID and acute COVID cases. Image
3) They focused on a specific protein called PLpro that other treatments haven't targeted well. This breakthrough could lead to new medicines for long COVID, a condition where people continue to feel sick long after their COVID-19 infection. Image
Read 4 tweets

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