{"id":10698,"date":"2020-12-02T20:08:03","date_gmt":"2020-12-02T20:08:03","guid":{"rendered":"https:\/\/blogs.cooperhealth.org\/ehealth\/?p=10698"},"modified":"2020-12-03T20:42:48","modified_gmt":"2020-12-03T20:42:48","slug":"herd-immunity-vaccines-and-covid-19","status":"publish","type":"post","link":"https:\/\/blogs.cooperhealth.org\/ehealth\/2020\/12\/02\/herd-immunity-vaccines-and-covid-19\/","title":{"rendered":"Herd Immunity, Vaccines, and COVID-19"},"content":{"rendered":"

\"Community<\/a><\/p>\n

Para leer en Espa\u00f1ol, por favor haga clic aqu\u00ed<\/a> <\/p>\n

Herd immunity is the concept that if enough people within the same community become immune to a disease, further spread becomes less likely. As a result, the entire community may be protected, even those who haven\u2019t had the disease or a vaccine. It is believed that herd immunity is achieved when 70% to 90% of the population becomes immune to a particular disease. There are two types of herd immunity \u2013 natural immunity caused by infection or immunity achieved through vaccination.<\/p>\n

The Zika virus provides an example of natural herd immunity. \u00a0Some diseases, like Zika which is carried by mosquitos, can sweep through countries and infect a large number of people very quickly. Essentially everyone gets infected, and then becomes immune to the virus, making it impossible for it to continue to spread. This ends the existing virus outbreak. The most recent Zika outbreak started in April 2015, and by November 2016, the World Health Organization announced the end of the epidemic.<\/p>\n

Measles provides an example of herd immunity achieved through vaccination. After enough people in the U.S. were vaccinated against the measles, there were very few new measles infections. \u00a0Once there is herd immunity, if someone with the measles comes into contact with a group of people vaccinated against the measles, the virus has nowhere to spread.<\/p>\n

\u201cIn theory, natural herd immunity could be a possibility for COVID-19,\u201d says Henry Fraimow, MD, Infectious Disease Specialist at Cooper University Health Care. \u201cHowever, it is not yet clear that an infection with COVID-19 makes a person immune to a future COVID-19 infection.\u201d<\/p>\n

Even if a COVID-19 infection guaranteed long-term immunity, it is estimated that 70% of the U.S. population, or 200 million people, would have to be exposed to and recover from the virus to achieve natural herd immunity. As of late November, about 13.4 million COVID-19 cases had been reported in the U.S., or about 4% of the population, well below the 70% threshold for herd immunity.<\/p>\n

\u201cThere are several reasons why it\u2019s not a great strategy to let this virus run its course,\u201d says Dr. Fraimow. \u201cEven though the risk of serious disease in younger individuals is lower than in older or immunocompromised individuals, there are still people in all of those age groups who become severely ill and die, and even those who do not die may suffer from long-term complications.\u201d<\/p>\n

\u201cAdditionally, our society is not always good at separating out people who aren\u2019t at risk from people who are at risk,\u201d Dr. Fraimow continues. \u201cAlso, our health care system can easily be overwhelmed during large outbreaks. Finally, we don\u2019t yet fully understand how long immunity lasts. All those factors create some concerns about how herd immunity might work linked to COVID-19.\u201d<\/p>\n

To achieve COVID-19 herd immunity and slow the spread of the virus, an effective and safe vaccine may be much more efficient than simply letting the disease run its course. Vaccination, if safe and effective, has the benefit of providing immunity while simultaneously decreasing the number of hospitalizations and deaths. Several vaccine candidates, which have shown promising early results, are now being reviewed by the FDA and may be available soon.<\/p>\n

According to the CDC, as of November 24, 2020, large-scale (Phase 3) clinical trials are in progress or are being planned for five COVID-19 vaccines in the U.S. To learn more about the clinical trial process, please click here<\/a>.<\/p>\n

Everyone can help to stop the spread of COVID-19. Remember to wear a face mask when in a public place, maintain good hand hygiene, and practice physical distancing from people who do not live in your household.<\/strong>
\n<\/a>
\n <\/p>\n

Inmunidad Colectiva, Vacunas y COVID-19<\/h2>\n

La inmunidad colectiva es el concepto de que, si suficientes personas dentro de la misma comunidad se vuelven inmunes a una enfermedad, es menos probable una mayor propagaci\u00f3n. Como resultado, toda la comunidad puede estar protegida, incluso aquellos que no han tenido la enfermedad o una vacuna. Se cree que la inmunidad colectiva se logra cuando el 70% al 90% de la poblaci\u00f3n se vuelve inmune a una enfermedad en particular. Hay dos tipos de inmunidad colectiva: la inmunidad natural causada por una infecci\u00f3n o la inmunidad obtenida mediante la vacunaci\u00f3n.<\/p>\n

El virus del Zika es un ejemplo de inmunidad colectiva natural.\u00a0 Algunas enfermedades, como el zika que son transmitidas por mosquitos, pueden arrasar los pa\u00edses e infectar a un gran n\u00famero de personas muy r\u00e1pidamente. Esencialmente todos se infectan, y luego se vuelve inmune al virus, por lo que es imposible que contin\u00fae propag\u00e1ndose. Esto pone fin al brote del virus existente. El brote m\u00e1s reciente de Zika comenz\u00f3 en abril de 2015, y en noviembre de 2016, la Organizaci\u00f3n Mundial de la Salud anunci\u00f3 el fin de la epidemia.<\/p>\n

El sarampi\u00f3n proporciona un ejemplo de inmunidad colectiva lograda a trav\u00e9s de la vacunaci\u00f3n. Despu\u00e9s de que suficientes personas en los Estados Unidos fueron vacunadas contra el sarampi\u00f3n, hubo muy pocas nuevas infecciones por sarampi\u00f3n.\u00a0 Una vez que hay inmunidad colectiva, si alguien con sarampi\u00f3n entra en contacto con un grupo de personas vacunadas contra el sarampi\u00f3n, el virus no tiene d\u00f3nde propagarse.<\/p>\n

“En teor\u00eda, la inmunidad colectiva natural podr\u00eda ser una posibilidad para COVID-19”, dice Henry Fraimow, MD, Especialista en Enfermedades Infecciosas de Cooper University Health Care. “Sin embargo, todav\u00eda no est\u00e1 claro que una infecci\u00f3n con COVID-19 hace que una persona sea inmune a una futura infecci\u00f3n por COVID-19”.<\/p>\n

Incluso si una infecci\u00f3n COVID-19 garantiza inmunidad a largo plazo, se estima que el 70% de la poblaci\u00f3n estadounidense, o 200 millones de personas, tendr\u00eda que estar expuesta y recuperarse del virus para lograr la inmunidad colectiva natural. A finales de noviembre, se hab\u00edan notificado alrededor de 13.4 millones de casos de COVID-19 en los Estados Unidos, o alrededor del 4% de la poblaci\u00f3n, muy por debajo del umbral del 70% para la inmunidad colectiva.<\/p>\n

“Hay varias razones por las que no es una gran estrategia dejar que este virus siga su curso”, dice el Dr. Fraimow. “Aunque el riesgo de enfermedad grave en individuos m\u00e1s j\u00f3venes es menor que en individuos mayores o inmunocomprometidos, todav\u00eda hay personas en todos esos grupos de edad que se enferman gravemente y mueren, e incluso aquellos que no mueren pueden sufrir complicaciones a largo plazo”.<\/p>\n

“Adem\u00e1s, nuestra sociedad no siempre es buena para separar a las personas que no est\u00e1n en riesgo de las personas que est\u00e1n en riesgo”, contin\u00faa el Dr. Fraimow. “Adem\u00e1s, nuestro sistema de atenci\u00f3n m\u00e9dica puede verse f\u00e1cilmente abrumado durante grandes brotes. Por \u00faltimo, todav\u00eda no entendemos completamente cu\u00e1nto dura la inmunidad. Todos esos factores crean algunas preocupaciones acerca de c\u00f3mo podr\u00eda funcionar la inmunidad colectiva vinculada a COVID-19”.<\/p>\n

Para lograr la inmunidad colectiva del COVID-19 y frenar la propagaci\u00f3n del virus, una vacuna eficaz y segura puede ser mucho m\u00e1s eficiente que simplemente dejar que la enfermedad se dirija a su curso. La vacunaci\u00f3n, si es segura y eficaz, tiene el beneficio de proporcionar inmunidad y, al mismo tiempo, disminuir el n\u00famero de hospitalizaciones y las muertes. Varios candidatos a vacunas, que han mostrado resultados tempranos prometedores, ahora est\u00e1n siendo revisados por la FDA y pueden estar disponibles pronto.<\/p>\n

Seg\u00fan los CDC, a partir del 24 de noviembre de 2020, los ensayos cl\u00ednicos a gran escala (Fase 3) est\u00e1n en curso o est\u00e1n siendo planeados para cinco vacunas COVID-19 en los Estados Unidos. Para obtener m\u00e1s informaci\u00f3n sobre el proceso de ensayo cl\u00ednico, haga clic aqu\u00ed.<\/p>\n

Todo el mundo puede ayudar a detener la propagaci\u00f3n de COVID-19. Recuerde usar una mascarilla cuando est\u00e9 en un lugar p\u00fablico, mantener una buena higiene de las manos y practicar el distanciamiento f\u00edsico de las personas que no viven en su hogar.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Para leer en Espa\u00f1ol, por favor haga clic aqu\u00ed Herd immunity is the concept that if enough people within the same community become immune to a disease, further spread becomes less likely. As a result, the entire community may be protected, even those who haven\u2019t had the disease or a vaccine. It is believed that … [Read more…]<\/a><\/span><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"entry","1":"post","2":"publish","3":"author-tvekteris","4":"post-10698","6":"format-standard","7":"category-uncategorized"},"yoast_head":"\nHerd Immunity, Vaccines, and COVID-19 - eHealth Connection<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.cooperhealth.org\/ehealth\/2020\/12\/02\/herd-immunity-vaccines-and-covid-19\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Herd Immunity, Vaccines, and COVID-19 - eHealth Connection\" \/>\n<meta property=\"og:description\" content=\"Para leer en Espa\u00f1ol, por favor haga clic aqu\u00ed Herd immunity is the concept that if enough people within the same community become immune to a disease, further spread becomes less likely. 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