Covid-19 kon al Oktober 2019 in China versprei
Covid-19 kon al Oktober 2019 in China versprei

Covid-19 kon al Oktober 2019 in China versprei

'n Nuwe studie toon die nuwe coronavirus het reeds by mense aangepas toe dit amptelik die eerste keer kop uitgesteek het.
Ronelle Rademeyer
Die coronavirus kon reeds so vroeg as Oktober 2019 in China versprei het – twee maande voordat die eerste Covid-19-geval in Wuhan aangemeld is.

Dit het aan die lig gekom in 'n nuwe studie wat Vrydag deur navorsers van die Universiteit van Kent in Brittanje gepubliseer is.

Die navorsers skat die virus het op 17 November sy verskyning gemaak en teen Januarie 2020 reeds wêreldwyd versprei.

China se eerste amptelike Covid-geval is eers in Desember 2019 aangemeld. Die vermoede was toe dat dit met die Huanan-seekosmark in Wuhan verbind kan word.

Van die vroeë gevalle van die verspreiding het egter geen verband met die Huanan-seekosmark getoon nie. Dit beteken moontlik die virus het reeds versprei voordat dit die mark bereik het.

'n Gesamentlike studie wat einde Maart deur China en die Wêreldgesondheidsorganisasie (WGO) gepubliseer is, toon daar is 'n moontlikheid dat daar voor die uitbreking in Wuhan sporadiese infeksies in mense kon gewees het.

Jesse Bloom van die Fred Hutchinson Cancer Research Center in die ­Amerikaanse stad Seattle het laas week data oor vroeë Covid-gevalle in China gepubliseer wat aanvanklik vernietig is.

Die data toon die monsters wat by die Huanan-mark geneem is, het geen teken van die coronavirus getoon nie, maar dat dit eerder 'n variant was wat reeds in China gesirkuleer het.

Die Amerikaanse nasionale instituut vir gesondheid het aan Reuters bevestig die monsters wat in dié studie gebruik is, is in Maart 2020 gestuur, maar toe vernietig nadat Chinese ondersoekers dié versoek gerig en ander monsters ingedien het.

Kritici meen die vernietiging van die monsters toon China het probeer toesmeer waar Covid-19 werklik uitgebreek het.

Alina Chan, 'n navorser van die Harvard's Broad Institute, het op Twitter gevra hoekom wetenskaplikes 'n internasionale databasis sal vra om sleutel­inligting te vernietig oor hoe Covid-19 in Wuhan begin het.

'n Studie wat Donderdag deur navorsers in Australië gepubliseer is, toon die coronavirus bind te maklik aan mense se weefsel.

Die studie suggereer die virussiekte het reeds by mense aangepas toe dit amptelik die eerste keer kop uitgesteek het. 

– Nampa/Reuters

Kommentaar

Republikein 2024-04-28

Geen kommentaar is op hierdie artikel gelaat nie

Meld asseblief aan om kommentaar te lewer

Premier League: Aston Villa 2 vs 2 Chelsea | Everton 1 vs 0 Brentford | Wolves 2 vs 1 Luton Town | Fulham 1 vs 1 Crystal Palace | Manchester United 1 vs 1 Burnley | Newcastle 5 vs 1 Sheffield United | West Ham 2 vs 2 Liverpool | Brighton 0 vs 4 Manchester City LaLiga: Atletico Madrid 3 vs 1 Athletic Club | Deportivo Alaves 3 vs 0 Celta Vigo | Almería 1 vs 3 Getafe | Las Palmas 0 vs 2 Girona | Real Sociedad 0 vs 1 Real Madrid SerieA: SS Lazio 1 vs 0 Hellas Verona | Juventus 0 vs 0 AC Milan | Lecce 1 vs 1 Monza | Frosinone 3 vs 0 Salernitana | Udinese 1 vs 2 AS Roma European Championships Qualifying: Hull City 3 vs 3 Ipswich Town | Millwall FC 1 vs 0 Plymouth Argyle | Blackburn Rovers 0 vs 0 Coventry City | Watford 1 vs 0 Sunderland | Bristol City 2 vs 0 Rotherham United | Huddersfield Town 1 vs 1 Birmingham City | Sheffield Wednesday 3 vs 0 West Bromwich Albion | Norwich City 2 vs 2 Swansea City | Cardiff City 1 vs 4 Middlesbrough | Southampton 0 vs 1 Stoke City | Queens Park Rangers 4 vs 0 Leeds United English Championship: Hull City 3 vs 3 Ipswich Town | Millwall FC 1 vs 0 Plymouth Argyle | Blackburn Rovers 0 vs 0 Coventry City | Watford 1 vs 0 Sunderland | Bristol City 2 vs 0 Rotherham United | Huddersfield Town 1 vs 1 Birmingham City | Sheffield Wednesday 3 vs 0 West Bromwich Albion | Norwich City 2 vs 2 Swansea City | Cardiff City 1 vs 4 Middlesbrough | Southampton 0 vs 1 Stoke City | Queens Park Rangers 4 vs 0 Leeds United Katima Mulilo: 13° | 30° Rundu: 13° | 31° Eenhana: 15° | 33° Oshakati: 17° | 32° Ruacana: 15° | 33° Tsumeb: 16° | 30° Otjiwarongo: 15° | 29° Omaruru: 16° | 32° Windhoek: 15° | 27° Gobabis: 15° | 28° Henties Bay: 20° | 33° Wind speed: 17km/h, Wind direction: S, Low tide: 11:40, High tide: 05:39, Low Tide: 23:58, High tide: 18:14 Swakopmund: 18° | 25° Wind speed: 19km/h, Wind direction: SW, Low tide: 11:38, High tide: 05:37, Low Tide: 23:56, High tide: 18:12 Walvis Bay: 21° | 32° Wind speed: 25km/h, Wind direction: SW, Low tide: 11:38, High tide: 05:36, Low Tide: 23:56, High tide: 18:11 Rehoboth: 18° | 29° Mariental: 20° | 32° Keetmanshoop: 21° | 32° Aranos: 19° | 31° Lüderitz: 20° | 38° Ariamsvlei: 20° | 33° Oranjemund: 16° | 35° Luanda: 26° | 31° Gaborone: 13° | 26° Lubumbashi: 11° | 24° Mbabane: 9° | 23° Maseru: 11° | 24° Antananarivo: 15° | 22° Lilongwe: 15° | 26° Maputo: 16° | 27° Windhoek: 15° | 27° Cape Town: 14° | 23° Durban: 15° | 27° Johannesburg: 14° | 24° Dar es Salaam: 24° | 30° Lusaka: 14° | 25° Harare: 10° | 25° Currency: GBP to NAD 23.44 | EUR to NAD 20.1 | CNY to NAD 2.59 | USD to NAD 18.8 | DZD to NAD 0.14 | AOA to NAD 0.02 | BWP to NAD 1.32 | EGP to NAD 0.38 | KES to NAD 0.14 | NGN to NAD 0.01 | ZMW to NAD 0.7 | ZWL to NAD 0.04 | BRL to NAD 3.66 | RUB to NAD 0.2 | INR to NAD 0.23 | USD to DZD 134.22 | USD to AOA 834.06 | USD to BWP 13.79 | USD to EGP 47.85 | USD to KES 134.48 | USD to NGN 1329.44 | USD to ZAR 18.78 | USD to ZMW 26.5 | USD to ZWL 321 | Stock Exchange: JSE All Share Index 75370.99 Up +1.40% | Namibian Stock Exchange (NSX) Overall Index 1673.12 Up +1.85% | Casablanca Stock Exchange (CSE) MASI 13354.97 Up +0.06% | Egyptian Exchange (EGX) 30 Index 25917.59 Down -3.21% | Botswana Stock Exchange (BSE) DCI 9142.54 Same 0 | NSX: MTC 7.75 SAME | Anirep 8.99 SAME | Capricorn Investment group 17.34 SAME | FirstRand Namibia Ltd 49 DOWN 0.50% | Letshego Holdings (Namibia) Ltd 4.1 UP 2.50% | Namibia Asset Management Ltd 0.7 SAME | Namibia Breweries Ltd 31.49 UP 0.03% | Nictus Holdings - Nam 2.22 SAME | Oryx Properties Ltd 12.1 UP 1.70% | Paratus Namibia Holdings 11.99 SAME | SBN Holdings 8.45 SAME | Trustco Group Holdings Ltd 0.48 SAME | B2Gold Corporation 47.34 DOWN 1.50% | Local Index closed 677.62 UP 0.12% | Overall Index closed 1534.6 DOWN 0.05% | Osino Resources Corp 19.47 DOWN 2.41% | Commodities: Gold US$ 2 338.05/OZ UP +0.31% | Copper US$ 4.54/lb UP +0.71% | Zinc US$ 2 869.50/T UP 0.15% | Brent Crude Oil US$ 88.96/BBP UP +0.08% | Platinum US$ 913.47/OZ DOWN -0.0026 Sport results: Premier League: Aston Villa 2 vs 2 Chelsea | Everton 1 vs 0 Brentford | Wolves 2 vs 1 Luton Town | Fulham 1 vs 1 Crystal Palace | Manchester United 1 vs 1 Burnley | Newcastle 5 vs 1 Sheffield United | West Ham 2 vs 2 Liverpool | Brighton 0 vs 4 Manchester City LaLiga: Atletico Madrid 3 vs 1 Athletic Club | Deportivo Alaves 3 vs 0 Celta Vigo | Almería 1 vs 3 Getafe | Las Palmas 0 vs 2 Girona | Real Sociedad 0 vs 1 Real Madrid SerieA: SS Lazio 1 vs 0 Hellas Verona | Juventus 0 vs 0 AC Milan | Lecce 1 vs 1 Monza | Frosinone 3 vs 0 Salernitana | Udinese 1 vs 2 AS Roma European Championships Qualifying: Hull City 3 vs 3 Ipswich Town | Millwall FC 1 vs 0 Plymouth Argyle | Blackburn Rovers 0 vs 0 Coventry City | Watford 1 vs 0 Sunderland | Bristol City 2 vs 0 Rotherham United | Huddersfield Town 1 vs 1 Birmingham City | Sheffield Wednesday 3 vs 0 West Bromwich Albion | Norwich City 2 vs 2 Swansea City | Cardiff City 1 vs 4 Middlesbrough | Southampton 0 vs 1 Stoke City | Queens Park Rangers 4 vs 0 Leeds United English Championship: Hull City 3 vs 3 Ipswich Town | Millwall FC 1 vs 0 Plymouth Argyle | Blackburn Rovers 0 vs 0 Coventry City | Watford 1 vs 0 Sunderland | Bristol City 2 vs 0 Rotherham United | Huddersfield Town 1 vs 1 Birmingham City | Sheffield Wednesday 3 vs 0 West Bromwich Albion | Norwich City 2 vs 2 Swansea City | Cardiff City 1 vs 4 Middlesbrough | Southampton 0 vs 1 Stoke City | Queens Park Rangers 4 vs 0 Leeds United Weather: Katima Mulilo: 13° | 30° Rundu: 13° | 31° Eenhana: 15° | 33° Oshakati: 17° | 32° Ruacana: 15° | 33° Tsumeb: 16° | 30° Otjiwarongo: 15° | 29° Omaruru: 16° | 32° Windhoek: 15° | 27° Gobabis: 15° | 28° Henties Bay: 20° | 33° Wind speed: 17km/h, Wind direction: S, Low tide: 11:40, High tide: 05:39, Low Tide: 23:58, High tide: 18:14 Swakopmund: 18° | 25° Wind speed: 19km/h, Wind direction: SW, Low tide: 11:38, High tide: 05:37, Low Tide: 23:56, High tide: 18:12 Walvis Bay: 21° | 32° Wind speed: 25km/h, Wind direction: SW, Low tide: 11:38, High tide: 05:36, Low Tide: 23:56, High tide: 18:11 Rehoboth: 18° | 29° Mariental: 20° | 32° Keetmanshoop: 21° | 32° Aranos: 19° | 31° Lüderitz: 20° | 38° Ariamsvlei: 20° | 33° Oranjemund: 16° | 35° Luanda: 26° | 31° Gaborone: 13° | 26° Lubumbashi: 11° | 24° Mbabane: 9° | 23° Maseru: 11° | 24° Antananarivo: 15° | 22° Lilongwe: 15° | 26° Maputo: 16° | 27° Windhoek: 15° | 27° Cape Town: 14° | 23° Durban: 15° | 27° Johannesburg: 14° | 24° Dar es Salaam: 24° | 30° Lusaka: 14° | 25° Harare: 10° | 25° Economic Indicators: Currency: GBP to NAD 23.44 | EUR to NAD 20.1 | CNY to NAD 2.59 | USD to NAD 18.8 | DZD to NAD 0.14 | AOA to NAD 0.02 | BWP to NAD 1.32 | EGP to NAD 0.38 | KES to NAD 0.14 | NGN to NAD 0.01 | ZMW to NAD 0.7 | ZWL to NAD 0.04 | BRL to NAD 3.66 | RUB to NAD 0.2 | INR to NAD 0.23 | USD to DZD 134.22 | USD to AOA 834.06 | USD to BWP 13.79 | USD to EGP 47.85 | USD to KES 134.48 | USD to NGN 1329.44 | USD to ZAR 18.78 | USD to ZMW 26.5 | USD to ZWL 321 | Stock Exchange: JSE All Share Index 75370.99 Up +1.40% | Namibian Stock Exchange (NSX) Overall Index 1673.12 Up +1.85% | Casablanca Stock Exchange (CSE) MASI 13354.97 Up +0.06% | Egyptian Exchange (EGX) 30 Index 25917.59 Down -3.21% | Botswana Stock Exchange (BSE) DCI 9142.54 Same 0 | NSX: MTC 7.75 SAME | Anirep 8.99 SAME | Capricorn Investment group 17.34 SAME | FirstRand Namibia Ltd 49 DOWN 0.50% | Letshego Holdings (Namibia) Ltd 4.1 UP 2.50% | Namibia Asset Management Ltd 0.7 SAME | Namibia Breweries Ltd 31.49 UP 0.03% | Nictus Holdings - Nam 2.22 SAME | Oryx Properties Ltd 12.1 UP 1.70% | Paratus Namibia Holdings 11.99 SAME | SBN Holdings 8.45 SAME | Trustco Group Holdings Ltd 0.48 SAME | B2Gold Corporation 47.34 DOWN 1.50% | Local Index closed 677.62 UP 0.12% | Overall Index closed 1534.6 DOWN 0.05% | Osino Resources Corp 19.47 DOWN 2.41% | Commodities: Gold US$ 2 338.05/OZ UP +0.31% | Copper US$ 4.54/lb UP +0.71% | Zinc US$ 2 869.50/T UP 0.15% | Brent Crude Oil US$ 88.96/BBP UP +0.08% | Platinum US$ 913.47/OZ DOWN -0.0026