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SATURDAY, JUNE 10, 2023
Covid may become 'seasonal' if it persists for many years: UN

Coronavirus chronicle

TBS Report
18 March, 2021, 10:00 am
Last modified: 18 March, 2021, 02:14 pm

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Covid may become 'seasonal' if it persists for many years: UN

The 16-member team set up by the UN' World Meteorological Organization pointed out that respiratory viral infections are often seasonal, "in particular the autumn-winter peak for influenza and cold-causing coronaviruses in temperate climates"

TBS Report
18 March, 2021, 10:00 am
Last modified: 18 March, 2021, 02:14 pm
Protesters wear protective face masks during a demonstration on Syntagma square in solidarity with jailed member of the disbanded leftist militant group 'November 17', Dimitris Koufodinas, who is serving multiple life terms for several crimes, including a series of murders and is currently on hunger strike, amid the coronavirus disease (COVID-19) pandemic, in Athens, Greece, March 3, 2021. REUTERS/Alkis Konstantinidis
Protesters wear protective face masks during a demonstration on Syntagma square in solidarity with jailed member of the disbanded leftist militant group 'November 17', Dimitris Koufodinas, who is serving multiple life terms for several crimes, including a series of murders and is currently on hunger strike, amid the coronavirus disease (COVID-19) pandemic, in Athens, Greece, March 3, 2021. REUTERS/Alkis Konstantinidis

Covid-19 appears likely to develop into a seasonal disease, the United Nations said Thursday, cautioning though against relaxing pandemic-related measures simply based on meteorological factors.

More than a year after the novel coronavirus first surfaced in China, a number of mysteries still surround the spread of the disease that has killed nearly 2.7 million people worldwide.

In its first report, an expert team tasked with trying to shed light on one of those mysteries by examining potential meteorological and air quality influences on the spread of Covid-19, found some indications the disease would develop into a seasonal menace, AFP reported.

The 16-member team set up by the UN' World Meteorological Organization pointed out that respiratory viral infections are often seasonal, "in particular the autumn-winter peak for influenza and cold-causing coronaviruses in temperate climates."

"This has fuelled expectations that, if it persists for many years, Covid-19 will prove to be a strongly seasonal disease," it said in a statement.

Modelling studies anticipate that transmission of SARS-CoV-2, the virus that causes Covid-19 disease, "may become seasonal over time".

Trigger?

But Covid-19 transmission dynamics so far appear to have been influenced mainly by government interventions like mask mandates and travel restrictions, they said, rather than the weather.

The task team therefore insisted that weather and climate conditions alone should for now not be the trigger for loosening anti-Covid restrictions.

"At this stage, evidence does not support the use of meteorological and air quality factors as a basis for governments to relax their interventions aimed at reducing transmission," said task team co-chair Ben Zaitchik of the earth and planetary sciences department at The John Hopkins University in the United States.

He pointed out that during the first year of the pandemic, infections in some places rose in warm seasons, "and there is no evidence that this couldn't happen again in the coming year".

The experts, who focused only on outdoor meteorology and air quality conditions in the report, said laboratory studies had provided some evidence the virus survives longer in cold, dry weather and when there is low ultraviolet radiation.

But it remained unclear whether meteorological influences "have a meaningful influence on transmission rates under real world conditions".

They also highlighted that evidence around the impact of air quality on the virus remained "inconclusive".

There was some preliminary evidence that poor air quality increases Covid-19 mortality rates, "but not that pollution directly impacts airborne transmission of SARS-CoV-2".

Top News

UN / United Nations (UN) / United Nations / Covid / Covid -19 / Covid 19 / World Meteorological Organization / Covid-19 infection / Coronavirus / Covid-19 transmission

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