Host or pathogen-related factors in COVID-19 severity?
Investigación publicada en The Lancet
31 de octubre de 2020
Lucy Okell and colleagues1 observed that the transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is currently in marked decline in many countries. Okell and colleagues suggest two possible explanations for this decline, namely the effect of lockdowns, physical distancing, and other interventions; or, alternatively, herd immunity. After analysing trends in cumulative deaths over time in many European countries that went into lockdown at different stages of their epidemic, and data obtained from serology studies on the proportion of the population that had the infection previously, Okell and colleagues found few data to support an explanation that relies on herd immunity
Gortazar C., Rodriguez del Rio FJ., Dominguez L. y de la Fuente J.
 | Sanidad y Biotecnología (SaBio). Instituto de Investigación en Recursos Cinegéticos (IREC). Consejo Superior de Investigaciones Científicas (CSIC). Universidad de Castilla La Mancha (UCLM). Gobierno de Castilla-La Mancha (JCCM). |
 | Centro de Vigilancia Sanitaria Veterinaria (VISAVET). Universidad Complutense (UCM). |
| Departamento de Sanidad Animal. Facultad de Veterinaria. Universidad Complutense (UCM). |
 | Local Medical Service Horcajo de los Montes. Health Service of the Government of Castilla-La Mancha (SESCAM). |
 | Departament of Veterinary Pathobiology. Center for Veterinary Health Sciences (CVHS). Oklahoma State University (OSU). |
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