Transmission system and Distribution system This network is called as the Transmission system and Distribution system. power) to the industrial loads and consumers.įor this operation, we require a large network of conductors between the generating station and the consumers. The main function of the power plant is to transfer the generated electricity (i.e. Meeting indoors but ensuring good ventilation will be good to minimise infection risk and also to keep cool,” she said.The power plant aka power station is a prominent source for electric power generation. Kathleen O’Reilly, an epidemiologist with the London School of Hygiene & Tropical Medicine, said: “Hopefully most people will be sensible and pragmatic meeting outdoors will minimise Covid-19 infection risk but staying out of direct sunlight, especially at midday, is still important. Warm weather is no substitute for mitigation.” “We’ve seen what the situation looks like in places warmer than the UK and in places colder than the UK. “I would really strongly encourage people to not think: ‘OK, it’s warm weather outside, so I don’t need to worry about Covid,’” he said. Dr Will Pearse, another researcher on the Imperial study, said the critical message was that the weather was only a small factor in the spread of Covid. Can we worry less about Covid in warmer weather? Dorigatti said other studies by Mohammad M Sajadi and Yiqun Ma had found a role for humidity, with lower humidity associated with higher transmission rates, implying that humid heat may reduce transmission more than dry heat. One study by scientists in China, yet to be peer reviewed, suggested mortality rates were lower on days when the humidity levels and temperatures were higher. Does the type of heat impact transmissibility? And given that almost no transmission occurs outside anyway, it doesn’t make a lot of difference,” he said.ĭorigatti said the Imperial study focused on temperature and did not specifically look at UV but other studies by the Yale professor Yiqun Ma and others had found higher UV rates could have a role to play in reducing transmission rates. So higher UV is bad for the virus, but that only really matters outside. Yes, but as most transmission of Covid was indoors, again the difference was slight, said Edmunds. In the winter if it is slightly above one you get winter epidemics, and if in summer it is slightly below one, less so.” Do UV rays kill the coronavirus? So a small change can allow the reproduction number to go slightly above one, or slightly below one. “Vaccination or immunity will bring the reproduction number right down or immunity in the population. “ in presence of interventions climatic factors play a negligible role.” So why do other viruses such as the flu flourish in winter?īecause even a small increase in a relatively low R number can make a difference, according to Edmunds. “From an epidemiological perspective this change can be significant,” said one of the study’s co-authors, Dr Ilaria Dorigatti. The Imperial study found that a 20 degree difference – typical between summer and winter – would probably see a change in the reproduction number of 0.8. If it’s sunny outside viruses will die quicker, but they wouldn’t have lasted very long in any case.”Ī recent study led by Imperial College and conducted on US data found higher temperatures were associated with lower transmission rates, if there were no other measures in place such as lockdowns and mask wearing. “Most transmission happens in enclosed settings. “Transmission outside is minimal,” said Edmunds, an epidemiologist at the London School of Hygiene & Tropical Medicine. Prof John Edmunds, a member of the Scientific Advisory Group for Emergencies (Sage), said the evidence showed that warmer temperatures affected transmission, but the impact was small as most transmission occurred inside. Studies show that the season, and the temperature, does have an impact on the spread of the coronavirus but that impact is not significant.
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