Paris, Feb 12 (IANS) A study on serum samples of over 9,000 French adults has suggested that the novel coronavirus might have been present in the country as early as November 2019, as some sampled between that month and January 2020 tested positive for antibodies against the virus.The research, led by Fabrice Carrat, director of the Paris-based Pierre Louis Institute of Epidemiology and Public Health, was published in the European Journal of Epidemiology on February 6, reports Xinhua news agency.All 9,144 serum samples were collected between November 4, 2019, and March 16, 2020, from participants living in the 12 mainland French regions. Their average age is 55 and 51 per cent of them are female, said the report."We identified 353 participants with a positive anti-SARS-CoV-2 IgG test," and "neutralizing antibodies were detected in 44 participants", it said.Strikingly, 13 participants with positive IgG and neutralising anti-bodies were sampled between November 5, 2019 and January 30, 2020, seven of whom had their serum sample collected in November 2019. Researchers believe that this study suggests Covid-19 presence in France as early as November 2019.On May 7, 2020, Albert Schweitzer hospital in Colmar, East France, announced in a statement that their radiologists reviewed 2,456 chest scans performed between November 1, 2019 and April 30, 2020, with results showing that the first suspected case dated back to November 16, 2019.On May 3, 2020, Yves Cohen, head of the intensive care units of two hospitals affiliated to AP-HP, told the media that the hospitals re-examined samples taken from 24 pneumonia patients between December 2019 and January 2020. Results showed that a man, who was admitted to hospital on December 27, 2019 and now in good health, tested positive for Covid-19. One of the hardest-hit countries in Europe, France has so far registered a total of 3,465,951 coronavirus cases, with 80,951 deaths.--IANSksk/
Wuhan (China), Feb 9 (IANS) There is no evidence of transmission of the novel coronavirus before December 2019 in Wuhan, said Liang Wannian, a member of the WHO-China joint study team, at a press conference on Tuesday.The WHO team recommended that more studies are required to identify the source of Covid-19 spread in the world.While the virus is widely believed to have originated from an animal source and spread to humans through an intermediary, the WHO team emphasised on studying the possibility of the transmission of the virus through frozen food, along with other possibilities.The WHO team finally reached Wuhan to study the origin of the virus more than one year after the outbreak of the virus was reported from Wuhan in China.--IANSgb/bg
वुहान (चीन), 9 फरवरी (आईएएनएस), वुहान में दिसंबर 2019 से पहले नोवल कोरोनोवायरस के प्रसार का कोई सबूत नहीं मिला है। डब्ल्यूएचओ-चीन संयुक्त अध्ययन दल के सदस्य लियांग वानियान ने मंगलवार को एक संवाददाता सम्मेलन में यह जानकारी दी।डब्ल्यूएचओ की टीम ने सिफारिश की कि दुनिया में फैले कोविड -19 के स्रोत की पहचान करने के लिए और अधिक अध्ययनों की आवश्यकता है।व्यापक रूप से अबतक यही माना जाता रहा है कि वायरस का प्रसार एक पशु स्रोत से हुआ है और किसी मध्यस्थ के माध्यम से मनुष्यों में फैल गया है। डब्लूएचओ टीम ने अन्य संभावनाओं के साथ, जमे हुए भोजन के माध्यम से वायरस के प्रसार की संभावना का अध्ययन पर भी जोर दिया।चीन के वुहान से वायरस के फैलने के एक साल से अधिक समय बाद वायरस की उत्पत्ति का अध्ययन करने के लिए डब्ल्यूएचओ की टीम आखिरकार वुहान पहुंच गई।--आईएएनएसआरएचए/एएनएम
Brasilia, Jan 14 (IANS) A study conducted by a local Brazilian health department revealed that thepresence of IgG antibodies, specific for SARS-CoV-2 virus which causes Covid-19, was detected in serum samples back in December 2019.The study conducted by the department in the state of Espirito Santo said that 7,370 serum samples had been collected between December 2019 and June 2020 from patients suspected of being infected with dengue and chikungunya, reports Xinhua news agency.With the samples analysed, IgG antibodies were detected in 210 people, of which 16 cases suggested the presence of the novel coronavirus in the state before Brazil announced the first officially-confirmed case on February 26, 2020. One of the case samples was collected on December 18, 2019.The health department stated that it takes about 20 days for a patient to reach detectable levels of IgG after the infection, so it could have occurred between late November and early December 2019.The Brazilian Ministry of Health issued a notice on the same day, instructing the state to conduct in-depth epidemiological investigations and send serum samples to Oswaldo Cruz Foundation, Rio de Janeiro, for RT-PCR test."Only with confirmation by the reference laboratory and the deepening of epidemiological studies will the Ministry of Health be able to confirm, or not, whether these cases were really positive for SARS-CoV-2," said the Ministry. The development comes as Brazil currently accounts for the third largest Covid-19 caseload in the world after the US and India, and the second highest death toll after the US.As of Thursday morning, the country's overall infection tally and death toll stood at 8,256,536 and 205,964.--IANSksk/
Rome- Researchers from the University of Milan have recently found that a woman in the northern Italian city was infected with Covid-19 in November 2019, according to media reports.
Through two different techniques on skin tissue, the researchers identified in a biopsy of a 25-year-old woman the presence of RNA gene sequences of the SARS-CoV-2 virus dating back to November 2019, according to the Italian regional daily newspaper L'Unione Sarda.
"There are, in this pandemic, cases in which the only sign of COVID-19 infection is that of a skin pathology," Raffaele Gianotti, who coordinated the research, was quoted by the newspaper as saying, Xinhua news agency reported.
"I wondered if we could find evidence of SARS-CoV-2 in the skin of patients with only skin diseases before the officially recognized epidemic phase began," said Gianotti, adding "we found 'the fingerprints' of COVID-19 in the skin tissue."
Based on data in the world literature, this is "the oldest evidence of the presence of the SARS-CoV-2 virus in a human being," said the report. (IANS)
<br>For years, northern India -- especially New Delhi -- has been battling critical levels of air pollution, which have remained consistently in the hazardous mark, for many days at a stretch, during winters. This air pollution has already taken a big toll on the health of the citizens and rattled the government, forcing it to devise new governance mechanism to address the menace of pollution in the capital. The study said the economic loss due to lost output from premature deaths and morbidity from air pollution was 1.36 per cent of the GDP in India in 2019. In Delhi, the loss due to lost output from premature deaths and illness attributable to air pollution as a percentage of state GDP was 1.06 per cent. Uttar Pradesh recorded highest loss to GDP at 1.34 per cent followed by Punjab at 1.22 per cent. "Delhi had the highest per-capita economic loss due to air pollution, followed by Haryana in 2019, with 5.4 times variation across all states," said the findings.According to the study, the economic loss per capita was highest in Delhi, which was to the tune of $62.0 followed by neighbouring Haryana at $53.8. The study's findings suggested that 1.67 million deaths were attributable to air pollution in India in 2019, accounting for 17.8 per cent of the total deaths in the country.The crude death rate per 100,000 population due to household air pollution decreased in India by 64.2 per cent from 1990 to 2019, due to reduced use of solid fuels, while that due to ambient particulate matter pollution increased by 115.3 per cent and that due to ambient ozone pollution increased by 139.2 per cent. "The death rate due to household air pollution decreased by 64.2% (52.2-74.2) from 1990 to 2019, while that due to ambient particulate matter pollution increased by 115.3% (28.3-344.4) and that due to ambient ozone pollution increased by 139.2% (96.5-195.8)," said the study.The authors of the study suggested that in 2019, the economic loss due to lost output from premature deaths attributable to ambient ozone pollution as a percentage of GDP in India was 0.05 per cent and varied 11.2 times across the states, ranging from 0.01 per cent in Nagaland to 0.12 per cent in Uttar Pradesh.The economic loss due to lost output from premature deaths attributable to air pollution in India in 2019 was $28.8 billion and from morbidity attributable to air pollution was $8.0 billion. "Of the total economic loss of $36.8 billion (27.4-47.7) attributable to air pollution in India in 2019, 36.6% was from lung diseases, which included COPD (21.1%), lower respiratory infections (14.2%), and lung cancer (1.2%), and the rest was from ischaemic heart disease (24.9%), stroke (14.1%), diabetes (8.4%), neonatal disorders (13.3%), and cataract (2.7%)," said the study.Citing the US, the study said every dollar invested in the control of ambient air pollution since 1970 is estimated to have yielded an economic benefit of $30, based on the willingness-to-pay approach. "There has been a substantial reduction in air pollution in the US over the past few decades along with significant economic growth, indicating that the successful implementation of air pollution control strategies could help in improving the health of the population, even when the economy is growing", said the study.(Sumit Saxena can be contacted at [email protected])--IANS<br>ss/in