A new study, published in PLOS Medicine, finds that statin use is associated with a slightly lower risk of death from COVID-19 in all patients, regardless of their age, sex, and COVID-19 risk factors.
For the study, a team of researchers from Sweden and Australia analyzed data of almost 1 million people in the Stockholm area of Sweden which were taken from various public registries, such as the Swedish Prescribed Drug Register and the Swedish Cause of Death Registry among others.
However, co-author of the study Rita Bergqvist, a medical student at the Karolinska Institutet, in Solna, Sweden, notes: “It’s important to remember that our study shows there’s a possibility that there is a moderate protective effect of statins against COVID-19. But to be sure of a protective effect, we would need a randomized, controlled trial. There is always a possibility that the results of an observational study like ours are due to unknown factors that we haven’t been able to adjust for in our models.”
According to recent research by scientists from King’s College London, receiving two doses of a vaccine reduces the risk of long Covid in those who get the infection almost by half.
For the study, a team of researchers analyzed data from more than 2 million people logging their symptoms tests and vaccine status on the UK Zoe Covid Symptoms study app between December 8, 2020, and July 4, 2021.
Lead researcher, Prof. Tim Spector from King’s College, says: “Vaccinations are massively reducing the chances of people getting long Covid in two ways. Firstly, by reducing the risk of any symptoms by eight- to 10-fold and then by halving the chances of any infection turning into long Covid if it does happen.”
A new study from the University of Georgia finds that the highest risk of COVID-19 transmission is when a person has mild or moderate disease severity. Also, the researchers found that people with the condition are most likely to spread the virus two days before and three days after symptoms appear.
For the study, a team of scientists used data from a large cohort study of 730 individuals who received a COVID-19 diagnosis in Zhejiang Province, China, between Jan. 8, 2020, and July 30, 2020.
Lead author Yang Ge, a doctoral student in UGA’s College of Public Health, says: “We found asymptomatic cases had lower transmissibility compared to symptomatic cases and were less likely to infect their contacts. In addition, we found that contacts that developed COVID-19 infections were more likely to be asymptomatic if they were exposed to an asymptomatic case.”
Recent research from the University of Surrey has confirmed that keeping car windows open to draw in fresh air plays a key role in reducing the risk of contracting the virus SARS-CoV-2 in-vehicle environments.
For the study, a team of researchers used sensors to monitor pollution particles concentration, map how those particles varied during different settings in the vehicle, and evaluate exposure dose per km of PM2.5 for three different ventilation settings such as open window, air conditioning using fresh air, and air conditioning using air recirculation. The scientists also used sensors to monitor CO2 emission, a proxy used in the experiment for COVID-19.
The researchers found that maintaining a continuous inlet of fresh air by keeping the windows open – while also wearing a mask – is the best way to protect from the transmission of Covid-19, but, at the same time, this increases exposure to air pollution particles.
New data suggest people infected with the Delta variant, the one behind most of Australia’s current cases and highly prevalent in the world, are having symptoms different to those that were previously associated with COVID.
The current most common five symptoms of COVID-19, including all variants, according to the ZOE COVID study, up to June 23, 2021:
Fever and cough, as earlier, remain among common COVID symptoms, as well as headache and sore throat, which were presented for some people. But now, loss of smell, which was quite common, is ranked ninth, and a runny nose, which was a rare symptom, becomes third.
There are several reasons why the symptoms evolving in this way. It may be due to the fact that data were originally taken mainly from patients admitted to hospitals, who were therefore likely to be sicker. Given the higher rates of vaccination coverage in older age groups, younger individuals are now accounting for a greater proportion of COVID cases, and they tend to have milder symptoms.
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