In this study, 37% of 146,000 PCR-tested contacts of infected persons in England were positive for SARS-CoV-2. Transmission of the alpha variant from twice-vaccinated index patients was rarer than that from unvaccinated index patients (adjusted rate ratio with BNT162b2, 0.32). Vaccine protection waned over time and was more effective against […]
While all eyes are on the new and little-understood omicron variant, the delta form of the coronavirus isn’t finished wreaking havoc in the U.S., sending record numbers of patients to the hospital in the Midwest and New England. “Omicron is a spark that’s on the horizon. Delta variant is the […]
The mRNA vaccines have been shown to be highly effective in preventing severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and associated illness,1,2 although recent reports suggest reduced effectiveness against infection with the B.1.617.2 (or delta) variant.3,4 We assessed the effectiveness of the mRNA-1273 (Moderna) vaccine among incarcerated men during a coronavirus […]
Es impresionante la capacidad de infectar de la variante Delta del SARS-CoV2. Cuando entra en un país, rápidamente sustituye a las variantes locales, como puede verse de lo que pasa en México (outbrake.info) Créditos: Comité científico Covid
People who contract the Delta variant have double the risk of hospitalization, as compared with earlier versions of the coronavirus, according to a new study published Friday in The Lancet Infectious Diseases. Based in England, the large study found that the Delta variant led to a higher rate of hospital admission and emergency care, with […]
Vaccine effectiveness against COVID-19 infection dropped from about 91% to 66% once the Delta variant became the dominant strain in the U.S., according to a new study published Tuesday by the CDC. The decline points to the highly contagious nature of the Delta variant and underscores the importance of vaccination to prevent […]
Over the course of the pandemic, COVID-19 has been a less serious illness for children than it has been for adults, and that continues to be true. But with the arrival of Delta, the risk for kids is rising, and that’s creating a perilous situation for hospitals across the United States […]
In a U.K. observational study, two doses of the Pfizer-BioNTech and Oxford/AstraZeneca vaccines had 88% and 67% effectiveness, respectively, against the Delta variant. As the Delta (B.1.617.2) SARS-CoV-2 variant fuels a global surge in COVID-19, an urgent clinical question concerns how effective the available vaccines are against this variant. Using […]
A nivel nacional hay 134 unidades médicas en rojo, informa la Secretaría de Salud. La tercera ola de contagios del COVID-19, con el impulso de la variante Delta, avanza a toda velocidad en el país y ya saturó 25 hospitales de atención urgente en la Ciudad de México y Zona […]
La carga viral de los infectados con la cepa descubierta en la India es hasta 1.260 veces más alta que en los afectados con mutacion. La variante delta se descubrió el pasado mes de octubre en la India. Desde entonces, se ha expandido a un centenar de países, incluido España, […]
