How long do COVID vaccines take to start working? (n.d.). Retrieved June 29, 2021, from https://theconversation.com/how-long-do-covid-vaccines-take-to-start-working-161876?utm_source=twitter&utm_medium=bylinetwitterbutton

Lipsitch, M., & Kahn, R. (2021). Interpreting vaccine efficacy trial results for infection and transmission. Vaccine, 39(30), 4082–4088. https://doi.org/10.1016/j.vaccine.2021.06.011

40 Iowa infectious disease doctors recommend COVID-19 vaccines. (n.d.). Retrieved June 28, 2021, from https://eu.desmoinesregister.com/story/opinion/columnists/iowa-view/2021/06/27/iowa-infectious-disease-doctors-recommend-covid-19-vaccines/7777363002/

Duarte-Salles, T., & Prieto-Alhambra, D. (2021). Heterologous vaccine regimens against COVID-19. The Lancet, S0140673621014422. https://doi.org/10.1016/S0140-6736(21)01442-2

Borobia, A. M., Carcas, A. J., Pérez-Olmeda, M., Castaño, L., Bertran, M. J., García-Pérez, J., Campins, M., Portolés, A., González-Pérez, M., García Morales, M. T., Arana-Arri, E., Aldea, M., Díez-Fuertes, F., Fuentes, I., Ascaso, A., Lora, D., Imaz-Ayo, N., Barón-Mira, L. E., Agustí, A., … Torvisco, J. M. (2021). Immunogenicity and reactogenicity of BNT162b2 booster in ChAdOx1-S-primed participants (CombiVacS): A multicentre, open-label, randomised, controlled, phase 2 trial. The Lancet, S0140673621014203. https://doi.org/10.1016/S0140-6736(21)01420-3

Covid-19 vaccine did not kill every animal it was tested on—Full Fact. (n.d.). Retrieved June 27, 2021, from https://fullfact.org/online/covid-vaccine-animal-testing/

Thompson, M. G., Burgess, J. L., Naleway, A. L., Tyner, H. L., Yoon, S. K., Meece, J., Olsho, L. E. W., Caban-Martinez, A. J., Fowlkes, A., Lutrick, K., Kuntz, J. L., Dunnigan, K., Odean, M. J., Hegmann, K. T., Stefanski, E., Edwards, L. J., Schaefer-Solle, N., Grant, L., Ellingson, K., … Gaglani, M. (2021). Interim Estimates of Vaccine Effectiveness of BNT162b2 and mRNA-1273 COVID-19 Vaccines in Preventing SARS-CoV-2 Infection Among Health Care Personnel, First Responders, and Other Essential and Frontline Workers—Eight U.S. Locations, December 2020–March 2021. MMWR. Morbidity and Mortality Weekly Report, 70(13), 495–500. https://doi.org/10.15585/mmwr.mm7013e3

Covid vaccine: US trial of AstraZeneca jab confirms safety—BBC News. (n.d.). Retrieved June 26, 2021, from https://www.bbc.co.uk/news/health-56479462

Parry, H. M., Tut, G., Faustini, S., Stephens, C., Saunders, P., Bentley, C., Hilyard, K., Brown, K., Amirthalingam, G., Charlton, S., Leung, S., Chiplin, E., Coombes, N. S., Bewley, K. R., Penn, E. J., Rowe, C., Otter, A., Watts, R., D’Arcangelo, S., … Moss, P. (2021). BNT162b2 Vaccination in People Over 80 Years of Age Induces Strong Humoral Immune Responses with Cross Neutralisation of P.1 Brazilian Variant. SSRN Electronic Journal. https://doi.org/10.2139/ssrn.3816840

Callaway, E. (2021). Mix-and-match COVID vaccines trigger potent immune response. Nature, 593(7860), 491–491. https://doi.org/10.1038/d41586-021-01359-3

Variants, 3 New Covid Vaccines, and Contested Efficacy Claims: A Month of Seismic Shifts and Confusion. (2021, January 31). Absolutely Maybe. https://absolutelymaybe.plos.org/2021/01/31/variants-3-new-covid-vaccines-and-contested-efficacy-claims-a-month-of-seismic-shifts-and-confusion/

Hilda Bastian, PhD. (2021, February 6). Unofficial unnamed AstraZeneca insider says they are doing the interim analysis for the US trial of the Oxford vaccine. AstraZeneca spokesperson says 4-6 weeks till data release. Https://t.co/VUHgbHN02d One is wrong? Or they’ll release only when have FDA minimum follow-up? Https://t.co/LgjfX8AIti [Tweet]. @hildabast. https://twitter.com/hildabast/status/1357862227106095105

ChAdOx1 nCov-19 provides minimal protection against mild-moderate COVID-19 infection from B.1.351 coronavirus variant in young South African adults | University of Oxford. (n.d.). Retrieved February 18, 2021, from https://www.ox.ac.uk/news/2021-02-07-chadox1-ncov-19-provides-minimal-protection-against-mild-moderate-covid-19-infection

Staff, R. (2021, February 6). AstraZeneca thinks shot can stop severe disease from South Africa COVID variant. Reuters. https://www.reuters.com/article/uk-health-coronavirus-astrazeneca-respon-idUKKBN2A60S2

Staff, R. (2021, February 5). AstraZeneca expects U.S. trial results in next 4-6 weeks, research chief says. Reuters. https://www.reuters.com/article/uk-health-coronavirus-astrazeneca-usa-idUSKBN2A522V

Steinhauser, G. (2021, February 7). Rollout of AstraZeneca Covid-19 Vaccine Halted in South Africa After Study. Wall Street Journal. https://www.wsj.com/articles/astrazeneca-vaccine-doesnt-protect-against-mild-and-moderate-cases-from-south-africa-strain-11612700385

Kai Kupferschmidt. (2021, March 16). “I’m not here to give you the outcome of any scientific review”, says EMA director Emer Cooke at start of press conference on AstraZeneca vaccine safety. ‘I’m here to explain the steps in the process, what we’re doing, and when you can expect us to come to a conclusion.’ [Tweet]. @kakape. https://twitter.com/kakape/status/1371811123197001729

the Guardian. ‘Small Number of Facebook Users Responsible for Most Covid Vaccine Skepticism – Report’, 16 March 2021. http://www.theguardian.com/technology/2021/mar/15/facebook-study-covid-vaccine-skepticism.

A Few People Developed a Rare Blood Disorder, Immune Thrombocytopenia, After Getting a COVID Vaccine | Health.com. (n.d.). Retrieved March 17, 2021, from https://www.health.com/condition/infectious-diseases/coronavirus/rare-blood-disorder-covid-vaccine-thrombocytopenia

November 19: “Randomisation and control in the age of coronavirus?” (Stephen Senn). (2020, October 30). PhilStatWars. https://phil-stat-wars.com/2020/10/30/november-19-randomisation-and-control-in-the-age-of-coronavirus-stephen-senn/

ReconfigBehSci. (2020, October 31). RT @learnfromerror: PHIL STAT FORUM NOVEMBER 19; STEPHEN SENN ‘Randomisation and Control in the Age of Coronavirus?’ https://t.co/hqT8GWTqC… [Tweet]. @SciBeh. https://twitter.com/SciBeh/status/1323311706609721344

Voysey, M., Clemens, S. A. C., Madhi, S. A., Weckx, L. Y., Folegatti, P. M., Aley, P. K., Angus, B., Baillie, V. L., Barnabas, S. L., Bhorat, Q. E., Bibi, S., Briner, C., Cicconi, P., Collins, A. M., Colin-Jones, R., Cutland, C. L., Darton, T. C., Dheda, K., Duncan, C. J. A., … Zuidewind, P. (2020). Safety and efficacy of the ChAdOx1 nCoV-19 vaccine (AZD1222) against SARS-CoV-2: An interim analysis of four randomised controlled trials in Brazil, South Africa, and the UK. The Lancet, 0(0). https://doi.org/10.1016/S0140-6736(20)32661-1

Matthews, D. (2020, May 20). How exposing healthy volunteers to Covid-19 for vaccine testing would work. Vox. https://www.vox.com/future-perfect/2020/5/20/21258725/covid-19-human-challenge-trials-vaccine-update-sars-cov-2

Callaway, E. (2020). The race for coronavirus vaccines: A graphical guide. Nature, 580(7805), 576–577. https://doi.org/10.1038/d41586-020-01221-y