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Emmanuel Profile picture
@ejustin46
Aug 1 • 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
Aug 3
CAUSAL INFLUENCE of WEATHER CONDITIONS, specifically temperature and precipitation, on the SPREAD of COVID-19 through their IMPACT on HUMAN MOBILITY PATTERNS in 32 European countries.

(For those who confuse environment, behavioral factors and seasons 🤗)
nature.com/articles/s4159…
Image
2) In this study researchers find that precipitation acts as a "natural lockdown" mechanism, as increased rainfall leads people to spend more time at home, reducing virus transmission. Image
2) This helps explain the relatively lower number of COVID-19 cases observed in Northern European countries.
In contrast, warm temperatures are found to encourage outdoor activities and social gatherings, increasing contact rates and ... Image
Read 6 tweets
Emmanuel Profile picture
Aug 3
ENSURE your TETANUS-DIPHTHERIA VACCINATION is UP TO DATE !

"Tetanus-diphtheria vaccine can prime SARS-CoV-2 CROSS-REACTIVE T CELLS" 💯👍
frontiersin.org/journals/immun…
Image
2) The study found that existing T cell responses in people were strong against both the SARS-CoV-2 spike protein and a pool of SARS-CoV-2 epitopes related to Td vaccine antigens. Image
3) Stimulating naive T cells with the Td vaccine led to specific responses to this SARS-CoV-2 epitope pool, but not other SARS-CoV-2 peptides. Immunizing mice with the Td vaccine also induced T cell responses to the SARS-CoV-2 epitope pool. Image
Read 4 tweets
Emmanuel Profile picture
Aug 3
USE of STRIPS of RAPID DIAGNOSTIC TESTS
The results showed high concordance between the two PCR methods, with 100% sensitivity and 85.96% specificity for PCR using RDT strips compared to the gold standard PCR using VTM.

virologyj.biomedcentral.com/articles/10.11…
Image
2) This study shows that COVID-19 rapid tests can be used to collect samples for genetic analysis of the SARS-CoV-2 virus. The researchers found that the genetic material from the rapid tests is just as accurate as samples from nose swabs for detecting the virus and ... Image
3) ...identifying viral variants. This approach allows for easier sample collection, especially in remote areas, to better track how the virus is spreading and evolving. Image
Read 4 tweets
Emmanuel Profile picture
Aug 3
JUST AMAZING !
A SMART N95 FACE MASK that CAN DETECT SARS-CoV-2 in exhaled breath 💯👍

Great thanks to @DavidJoffe64
for the study 🙏 pubs.acs.org/doi/10.1021/ac…
Image
2) This study presents a smart face mask which has a special paper-based collector embedded in it to capture the exhaled air. This collected sample is then analyzed using an electrochemical sensor that can detect the SARS-CoV-2 spike protein. Image
3) The key advantages are:
- The paper collector is simple, cheap, and safe, without any chemicals.
- The sensor can sensitively (detection limit of 1 ng/mL) and selectively detect the SARS-CoV-2 protein. Image
Read 5 tweets
Emmanuel Profile picture
Aug 3
DENGUE and COVID : DANGER !

Prior dengue infection is significantly associated with increased risk of COVID-19 hospitalization (3.25 times higher) and severe COVID-19
illness (3.39 times higher) 🥵
academic.oup.com/ofid/advance-a…
Image
2) This study examined how having a recent dengue infection affects the risk and severity of a subsequent COVID-19 infection in Singapore. The key findings were:
- Those with a prior dengue infection were 3 times more likely to be hospitalized for COVID-19, and ... Image
3) ...3.4 times more likely to develop severe COVID-19 illness.
- These increased risks were seen across different age groups and vaccination statuses, including in fully vaccinated and boosted individuals. Image
Read 5 tweets
Emmanuel Profile picture
Aug 2
SARS-COV-2 in SEMEN ! 🥵

11% of men had the virus detected in their semen, with one man testing positive for up to 90 days ! 💯
onlinelibrary.wiley.com/doi/10.1111/an…
Image
2) This study looked at the presence and effects of the SARS-COV-2 in the semen of men with mild illness. Key findings:
- 11% of men had the virus detected in their semen, with one man testing positive for up to 90 days.
- The virus found in semen was able to infect cells ... Image
3) ...in the lab, but only during the initial illness, not later on.
- The virus was mainly found in cells shed from the male reproductive tract, not in sperm cells themselves.
- Semen quality showed mild, temporary decreases during illness, but returned to normal over time. Image
Read 5 tweets

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