Cargando…
Vaccine effectiveness against SARS-CoV-2 transmission and infections among household and other close contacts of confirmed cases, the Netherlands, February to May 2021
Several studies report high effectiveness of COVID-19 vaccines against SARS-CoV-2 infection and severe disease, however an important knowledge gap is the vaccine effectiveness against transmission (VET). We present estimates of the VET to household and other close contacts in the Netherlands, from F...
Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
European Centre for Disease Prevention and Control (ECDC)
2021
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8343550/ https://www.ncbi.nlm.nih.gov/pubmed/34355689 http://dx.doi.org/10.2807/1560-7917.ES.2021.26.31.2100640 |
_version_ | 1783734311086718976 |
---|---|
author | de Gier, Brechje Andeweg, Stijn Joosten, Rosa ter Schegget, Ronald Smorenburg, Naomi van de Kassteele, Jan Hahné, Susan JM van den Hof, Susan de Melker, Hester E Knol, Mirjam J Hofhuis, Agnetha Teirlinck, Anne van Lier, Alies Boudewijns, Bronke Verstraten, Carolien Willekens, Guido Veldhuijzen, Irene Polman, Jan van de Kassteele, Jan Alblas, Jeroen van Heereveld, Janneke Heijne, Janneke Bulsink, Kirsten Wielders, Lieke van Asten, Liselotte Jenniskens, Liz Soetens, Loes Mulder, Maarten Schipper, Maarten de Lange, Marit Smorenburg, Naomi Neppelenbroek, Nienke van den Berg, Patrick de Oliveira Bressane Lima, Priscila van Gaalen, Rolina Wijburg, Sara van Iersel, Senna de Bruijn, Siméon Andeweg, Stijn Wierenga, Sjoerd Lanooij, Susan Keijser, Sylvia Smit, Tara Klinkenberg, Don Backer, Jantien de Boer, Pieter McDonald, Scott Maxwell, Amber Niessen, Annabel de Gier, Brechje Berry, Danytza van Wees, Daphne van Meijeren, Dimphey Vos, Eric R.A. Dijkstra, Frederika Kemmeren, Jeanet Ainslie, Kylie Middeldorp, Marit Kooijman, Marjolein Knol, Mirjam Zadeh, Shahabeh Abbas Faber, Timor van Hoek, Albert Jan Geubbels, Eveline de Melker, Hester Wallinga, Jacco van Gageldonk-Lafeber, Rianne Hahne, Susan van den Hof, Susan |
author_facet | de Gier, Brechje Andeweg, Stijn Joosten, Rosa ter Schegget, Ronald Smorenburg, Naomi van de Kassteele, Jan Hahné, Susan JM van den Hof, Susan de Melker, Hester E Knol, Mirjam J Hofhuis, Agnetha Teirlinck, Anne van Lier, Alies Boudewijns, Bronke Verstraten, Carolien Willekens, Guido Veldhuijzen, Irene Polman, Jan van de Kassteele, Jan Alblas, Jeroen van Heereveld, Janneke Heijne, Janneke Bulsink, Kirsten Wielders, Lieke van Asten, Liselotte Jenniskens, Liz Soetens, Loes Mulder, Maarten Schipper, Maarten de Lange, Marit Smorenburg, Naomi Neppelenbroek, Nienke van den Berg, Patrick de Oliveira Bressane Lima, Priscila van Gaalen, Rolina Wijburg, Sara van Iersel, Senna de Bruijn, Siméon Andeweg, Stijn Wierenga, Sjoerd Lanooij, Susan Keijser, Sylvia Smit, Tara Klinkenberg, Don Backer, Jantien de Boer, Pieter McDonald, Scott Maxwell, Amber Niessen, Annabel de Gier, Brechje Berry, Danytza van Wees, Daphne van Meijeren, Dimphey Vos, Eric R.A. Dijkstra, Frederika Kemmeren, Jeanet Ainslie, Kylie Middeldorp, Marit Kooijman, Marjolein Knol, Mirjam Zadeh, Shahabeh Abbas Faber, Timor van Hoek, Albert Jan Geubbels, Eveline de Melker, Hester Wallinga, Jacco van Gageldonk-Lafeber, Rianne Hahne, Susan van den Hof, Susan |
author_sort | de Gier, Brechje |
collection | PubMed |
description | Several studies report high effectiveness of COVID-19 vaccines against SARS-CoV-2 infection and severe disease, however an important knowledge gap is the vaccine effectiveness against transmission (VET). We present estimates of the VET to household and other close contacts in the Netherlands, from February to May 2021, using contact monitoring data. The secondary attack rate among household contacts was lower for fully vaccinated than unvaccinated index cases (11% vs 31%), with an adjusted VET of 71% (95% confidence interval: 63–77). |
format | Online Article Text |
id | pubmed-8343550 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | European Centre for Disease Prevention and Control (ECDC) |
record_format | MEDLINE/PubMed |
spelling | pubmed-83435502021-08-20 Vaccine effectiveness against SARS-CoV-2 transmission and infections among household and other close contacts of confirmed cases, the Netherlands, February to May 2021 de Gier, Brechje Andeweg, Stijn Joosten, Rosa ter Schegget, Ronald Smorenburg, Naomi van de Kassteele, Jan Hahné, Susan JM van den Hof, Susan de Melker, Hester E Knol, Mirjam J Hofhuis, Agnetha Teirlinck, Anne van Lier, Alies Boudewijns, Bronke Verstraten, Carolien Willekens, Guido Veldhuijzen, Irene Polman, Jan van de Kassteele, Jan Alblas, Jeroen van Heereveld, Janneke Heijne, Janneke Bulsink, Kirsten Wielders, Lieke van Asten, Liselotte Jenniskens, Liz Soetens, Loes Mulder, Maarten Schipper, Maarten de Lange, Marit Smorenburg, Naomi Neppelenbroek, Nienke van den Berg, Patrick de Oliveira Bressane Lima, Priscila van Gaalen, Rolina Wijburg, Sara van Iersel, Senna de Bruijn, Siméon Andeweg, Stijn Wierenga, Sjoerd Lanooij, Susan Keijser, Sylvia Smit, Tara Klinkenberg, Don Backer, Jantien de Boer, Pieter McDonald, Scott Maxwell, Amber Niessen, Annabel de Gier, Brechje Berry, Danytza van Wees, Daphne van Meijeren, Dimphey Vos, Eric R.A. Dijkstra, Frederika Kemmeren, Jeanet Ainslie, Kylie Middeldorp, Marit Kooijman, Marjolein Knol, Mirjam Zadeh, Shahabeh Abbas Faber, Timor van Hoek, Albert Jan Geubbels, Eveline de Melker, Hester Wallinga, Jacco van Gageldonk-Lafeber, Rianne Hahne, Susan van den Hof, Susan Euro Surveill Rapid Communication Several studies report high effectiveness of COVID-19 vaccines against SARS-CoV-2 infection and severe disease, however an important knowledge gap is the vaccine effectiveness against transmission (VET). We present estimates of the VET to household and other close contacts in the Netherlands, from February to May 2021, using contact monitoring data. The secondary attack rate among household contacts was lower for fully vaccinated than unvaccinated index cases (11% vs 31%), with an adjusted VET of 71% (95% confidence interval: 63–77). European Centre for Disease Prevention and Control (ECDC) 2021-08-05 /pmc/articles/PMC8343550/ /pubmed/34355689 http://dx.doi.org/10.2807/1560-7917.ES.2021.26.31.2100640 Text en This article is copyright of the authors or their affiliated institutions, 2021. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution (CC BY 4.0) Licence. You may share and adapt the material, but must give appropriate credit to the source, provide a link to the licence, and indicate if changes were made. |
spellingShingle | Rapid Communication de Gier, Brechje Andeweg, Stijn Joosten, Rosa ter Schegget, Ronald Smorenburg, Naomi van de Kassteele, Jan Hahné, Susan JM van den Hof, Susan de Melker, Hester E Knol, Mirjam J Hofhuis, Agnetha Teirlinck, Anne van Lier, Alies Boudewijns, Bronke Verstraten, Carolien Willekens, Guido Veldhuijzen, Irene Polman, Jan van de Kassteele, Jan Alblas, Jeroen van Heereveld, Janneke Heijne, Janneke Bulsink, Kirsten Wielders, Lieke van Asten, Liselotte Jenniskens, Liz Soetens, Loes Mulder, Maarten Schipper, Maarten de Lange, Marit Smorenburg, Naomi Neppelenbroek, Nienke van den Berg, Patrick de Oliveira Bressane Lima, Priscila van Gaalen, Rolina Wijburg, Sara van Iersel, Senna de Bruijn, Siméon Andeweg, Stijn Wierenga, Sjoerd Lanooij, Susan Keijser, Sylvia Smit, Tara Klinkenberg, Don Backer, Jantien de Boer, Pieter McDonald, Scott Maxwell, Amber Niessen, Annabel de Gier, Brechje Berry, Danytza van Wees, Daphne van Meijeren, Dimphey Vos, Eric R.A. Dijkstra, Frederika Kemmeren, Jeanet Ainslie, Kylie Middeldorp, Marit Kooijman, Marjolein Knol, Mirjam Zadeh, Shahabeh Abbas Faber, Timor van Hoek, Albert Jan Geubbels, Eveline de Melker, Hester Wallinga, Jacco van Gageldonk-Lafeber, Rianne Hahne, Susan van den Hof, Susan Vaccine effectiveness against SARS-CoV-2 transmission and infections among household and other close contacts of confirmed cases, the Netherlands, February to May 2021 |
title | Vaccine effectiveness against SARS-CoV-2 transmission and infections among household and other close contacts of confirmed cases, the Netherlands, February to May 2021 |
title_full | Vaccine effectiveness against SARS-CoV-2 transmission and infections among household and other close contacts of confirmed cases, the Netherlands, February to May 2021 |
title_fullStr | Vaccine effectiveness against SARS-CoV-2 transmission and infections among household and other close contacts of confirmed cases, the Netherlands, February to May 2021 |
title_full_unstemmed | Vaccine effectiveness against SARS-CoV-2 transmission and infections among household and other close contacts of confirmed cases, the Netherlands, February to May 2021 |
title_short | Vaccine effectiveness against SARS-CoV-2 transmission and infections among household and other close contacts of confirmed cases, the Netherlands, February to May 2021 |
title_sort | vaccine effectiveness against sars-cov-2 transmission and infections among household and other close contacts of confirmed cases, the netherlands, february to may 2021 |
topic | Rapid Communication |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8343550/ https://www.ncbi.nlm.nih.gov/pubmed/34355689 http://dx.doi.org/10.2807/1560-7917.ES.2021.26.31.2100640 |
work_keys_str_mv | AT degierbrechje vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT andewegstijn vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT joostenrosa vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT terscheggetronald vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT smorenburgnaomi vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT vandekassteelejan vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT hahnesusanjm vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT vandenhofsusan vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT demelkerhestere vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT knolmirjamj vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT hofhuisagnetha vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT teirlinckanne vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT vanlieralies vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT boudewijnsbronke vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT verstratencarolien vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT willekensguido vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT veldhuijzenirene vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT polmanjan vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT vandekassteelejan vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT alblasjeroen vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT vanheereveldjanneke vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT heijnejanneke vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT bulsinkkirsten vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT wielderslieke vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT vanastenliselotte vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT jenniskensliz vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT soetensloes vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT muldermaarten vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT schippermaarten vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT delangemarit vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT smorenburgnaomi vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT neppelenbroeknienke vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT vandenbergpatrick vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT deoliveirabressanelimapriscila vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT vangaalenrolina vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT wijburgsara vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT vanierselsenna vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT debruijnsimeon vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT andewegstijn vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT wierengasjoerd vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT lanooijsusan vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT keijsersylvia vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT smittara vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT klinkenbergdon vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT backerjantien vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT deboerpieter vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT mcdonaldscott vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT maxwellamber vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT niessenannabel vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT degierbrechje vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT berrydanytza vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT vanweesdaphne vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT vanmeijerendimphey vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT vosericra vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT dijkstrafrederika vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT kemmerenjeanet vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT ainsliekylie vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT middeldorpmarit vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT kooijmanmarjolein vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT knolmirjam vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT zadehshahabehabbas vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT fabertimor vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT vanhoekalbertjan vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT geubbelseveline vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT demelkerhester vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT wallingajacco vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT vangageldonklafeberrianne vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT hahnesusan vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 AT vandenhofsusan vaccineeffectivenessagainstsarscov2transmissionandinfectionsamonghouseholdandotherclosecontactsofconfirmedcasesthenetherlandsfebruarytomay2021 |