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Flu Vaccine Linked to Lower Risk for Stroke: INTERSTROKE

Having had a recent acute febrile illness was associated with an increased risk for ischemic stroke, whereas having received an influenza vaccination was associated with a reduced risk for stroke in a large new case–control study. “While influenza vaccination is a cost-effective method to prevent influenza, it is also an […]

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Fourth Dose of BNT162b2 mRNA Covid-19 Vaccine in a Nationwide Setting

Abstract BACKGROUND With large waves of infection driven by the B.1.1.529 (omicron) variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), alongside evidence of waning immunity after the booster dose of coronavirus disease 2019 (Covid-19) vaccine, several countries have begun giving at-risk persons a fourth vaccine dose. METHODS To evaluate […]

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Testing and Treating Can Help Normalize COVID and Daily Life

“Test and treat” is a critical strategy for people and society returning to more normal activities. Now that the early responses to the COVID-19 pandemic have — sort of — been met (ie, minimizing infection, spread, illness, and death with masks, testing, contact tracing, social distancing, and vaccines), we are […]

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About 19% of COVID-19 Headaches Become Chronic

Approximately 1 in 5 patients who presented with headache during the acute phase of COVID-19 developed chronic daily headache, according to a study published in the journal Cephalalgia. The greater the headache’s intensity during the acute phase, the greater the likelihood that it would persist. The research, carried out by members of the Headache Study Group […]

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Large US Study Examines First 6 Months of COVID-19 Vaccine Safety Data

During the first 6 months of the US COVID-19 vaccination campaign, most adverse events reported to surveillance systems were mild and short-lived, researchers from the Centers for Disease Control and Prevention reported in The Lancet Infectious Diseases. The study examined safety data collected through the new v-safe surveillance system and the Vaccine Adverse […]

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SARS-CoV-2 co-infection with influenza viruses, respiratory syncytial virus, or adenoviruses

Measures to reduce transmission of SARS-CoV-2 have also been effective in reducing the transmission of other endemic respiratory viruses. As many countries decrease the use of such measures,  we expect that SARS-CoV-2 will circulate with other respiratory viruses, increasing the probability of co-infections.  The clinical outcome of respiratory viral co-infections […]

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What is the new COVID-19 variant BA.2, and will it cause another wave of infections in the US?

A new omicron subvariant of the virus that causes COVID-19, BA.2, is quickly becoming the predominant source of infections amid rising cases around the world. Immunologists Prakash Nagarkatti and Mitzi Nagarkatti of the University of South Carolina explain what makes it different from previous variants, whether there will be another […]

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