Mary Ramsay
University of the Witwatersrand(ZA)
Publications by Year
Research Areas
Bacterial Infections and Vaccines, SARS-CoV-2 and COVID-19 Research, Pneumonia and Respiratory Infections, Vaccine Coverage and Hesitancy, COVID-19 Clinical Research Studies
Most-Cited Works
- → Effectiveness of Covid-19 Vaccines against the B.1.617.2 (Delta) Variant(2021)3,061 cited
- → Effectiveness of the Pfizer-BioNTech and Oxford-AstraZeneca vaccines on covid-19 related symptoms, hospital admissions, and mortality in older adults in England: test negative case-control study(2021)1,387 cited
- → COVID-19 vaccine coverage in health-care workers in England and effectiveness of BNT162b2 mRNA vaccine against infection (SIREN): a prospective, multicentre, cohort study(2021)830 cited
- → Global epidemiology of meningococcal disease(2009)749 cited
- → SARS-CoV-2 infection rates of antibody-positive compared with antibody-negative health-care workers in England: a large, multicentre, prospective cohort study (SIREN)(2021)735 cited
- → Effectiveness of maternal pertussis vaccination in England: an observational study(2014)725 cited