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Vaccination

Cardiac Issues After COVID Infection and Vaccination: New Data

New data from two different sources on cardiac complications linked to COVID-19 have shown that such issues are low overall, but are higher after infection than after vaccination. The new information comes from the Centers for Disease Control and Prevention’s (CDC’s) National Patient-Centered Clinical Research Network (PCORnet), and from a separate […]

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Effectiveness of COVID-19 mRNA Vaccination in Preventing COVID-19–Associated Hospitalization Among Adults with Previous SARS-CoV-2 Infection — United States, June 2021–February 2022

Summary What is already known about this topic? Persons with previous SARS-CoV-2 infection have some protection against reinfection leading to hospitalization, but there is limited evidence regarding the additional benefit of vaccination among these persons. What is added by this report? Among persons with previous infection, COVID-19 mRNA vaccination provided […]

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Timing of COVID-19 Vaccination Crucial for Blood Cancer Patients

The timing of treatment in relation to vaccination is the strongest predictor of COVID-19 vaccine antibody response say the researchers of a new study. For their study, published in Nature Cancer, researchers from the University of Southampton led a UK multicentre prospective observational study (PROSECO) evaluating COVID-19 vaccine responses in individuals with […]

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No Increased Risk of Rare Neurological Events After COVID Vaccination

A new study finds no increased risk of rare neurological events after COVID-19 vaccination, but does find an increased risk of these events after SARS-CoV-2 infection. The European Medicines Agency (EMA) listed Guillain-Barré syndrome as a rare side effect of the Oxford-AstraZeneca and Pfizer-BioNTech COVID vaccines following reports that some […]

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Vaccination Status in School Children and Risk for COVID-19

A real-world, prospective study in a secondary school system showed risk for symptomatic infection to be 9 times higher in unvaccinated children. Recent surveys suggest that many parents are reluctant to permit SARS-CoV-2 vaccination for their school-aged children. In this study, researchers in North Carolina used a private secondary school […]

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Disparities in COVID-19 Vaccination Coverage Between Urban and Rural Counties — United States, December 14, 2020–January 31, 2022

Summary What is already known about this topic? COVID-19 incidence and mortality are higher in rural than in urban communities. Disparities in COVID-19 vaccination coverage between urban and rural communities have been recognized. What is added by this report? COVID-19 vaccination coverage with the first dose of the primary vaccination […]

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COVID-19 Vaccination During Pregnancy Not Linked to Complications at Birth: US Study

 COVID-19 vaccination during pregnancy was not associated with preterm delivery or underweight newborns, in a study published by the U.S. Centers for Disease Control and Prevention (CDC) on Tuesday. Rates of preterm birth were 4.9% among more than 10,000 women who received at least one dose of a COVID-19 vaccine, […]

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mRNA vaccination induces tick resistance and prevents transmission of the Lyme disease agent

An mRNA vaccine for ticks Repeated exposures to the black-legged tick, Ixodes scapularis, can lead to acquired resistance against ticks or “tick immunity.” To bypass the need for repeated exposures while still generating tick resistance, Sajid et al. developed an mRNA vaccine that encoded for 19 I. scapularis salivary proteins (19ISP). Guinea pigs vaccinated with […]

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Lives saved and hospitalizations averted by COVID-19 vaccination in New York City: a modeling study

Summary Background Following the start of COVID-19 vaccination in New York City (NYC), cases have declined over 10-fold from the outbreak peak in January 2020, despite the emergence of highly transmissible variants. We evaluated the impact of NYC’s vaccination campaign on saving lives as well as averting hospitalizations and cases. […]

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