Variants of SARS-CoV-2, the virus that causes COVID-19, are expected to continue to emerge. Some will emerge and disappear, and others will emerge and continue to spread and may replace previous variants. For example, the variant of the virus that caused the first U.S. COVID-19 cases in January 2020 is […]
Following the White House administration’s announcement to start booster COVID-19 vaccinations for American adults next month, experts weighed in on the evidence for choosing an 8-month cut-off, how breakthrough infections figure in, and why calling one mRNA vaccine better than the other could be misleading. Timing came up more than once at […]
Abstract SARS-CoV-2 mutations may diminish vaccine-induced protective immune responses, particularly as antibody titers wane over time. Here, we assess the impact of SARS-CoV-2 variants B.1.1.7 (Alpha), B.1.351 (Beta), P.1 (Gamma), B.1.429 (Epsilon), B.1.526 (Iota), and B.1.617.2 (Delta) on binding, neutralizing, and ACE2-competing antibodies elicited by the vaccine mRNA-1273 over seven […]
In announcing new guidance on Tuesday, the CDC said vaccinated people should wear face masks in indoor public places with “high” or “substantial” community transmission rates of COVID-19. Data from the CDC shows that designation covers 69.3% of all counties in the United States — 52.2% (1,680 counties) with high community transmission rates […]
Viral mutations and variants in the United States are routinely monitored through sequence-based surveillance, laboratory studies, and epidemiological investigations. A US government SARS-CoV-2 Interagency Group (SIG) developed a Variant Classification scheme that defines three classes of SARS-CoV-2 variants: Variant of Interest Variant of Concern Variant of High Consequence The B.1.1.7 (Alpha), B.1.351 […]
ORLANDO, Fla. (AP) — A day after it recorded the most new daily cases since the start of the pandemic, Florida on Sunday broke a previous record for current hospitalizations set more than a year ago before vaccines were available. The Sunshine State had 10,207 people hospitalized with confirmed COVID-19 […]
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, […]
Last Thursday, the CDC announced its support for third doses of COVID vaccine for our immunocompromised patients. However, these much-needed boosters cannot be given until the FDA gives its approval. As physicians who care for patients with weakened immune systems, we are holding our breath and hoping the FDA will follow the […]
Según un estudio interno de la farmacéutica, la efectividad de su vacuna desciende una media de un 6% entre el cuarto y sexto mes después de recibir la pauta completa. Este miércoles, la farmacéutica estadounidense Pfizer ha presentado nuevos datos de un estudio propio que sugieren que una tercera dosis de la vacuna contra la […]
Last week we interviewed Dr. Winston Timp about advances that have enabled the acquisition of robust viral sequencing data during the COVID-19 pandemic. That conversation showcased the role of less visible data streams as the United States combats the anticipated development and viral variants including the Delta variant and other COVID-19 […]
