Analysis of a meningococcal meningitis outbreak in Niger - potential effectiveness of reactive prophylaxis. by Matt D T Hitchings, Matthew E Coldiron, Rebecca F Grais, Marc Lipsitch

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Effectiveness of the fourth dose of COVID-19 vaccines against severe COVID-19 among adults 40 years or older in Brazil: a population-based cohort studyResearch in context by Felippe Lazar Neto, Matt D.T. Hitchings, Avnika B. Amin, Giovanny V.A. de França, Margaret L. Lind, Mario Sergio Scaramuzzini Torres, Daniel Henrique Tsuha, Roberto D. de Oliveira, Derek A.T. Cummings, Natalie E. Dean, Jason R. Andrews, Albert I. Ko, Julio Croda, Otavio T. Ranzani

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Effectiveness of CoronaVac among healthcare workers in the setting of high SARS-CoV-2 Gamma variant transmission in Manaus, Brazil: A test-negative case-control study by Matt D.T. Hitchings, Otavio T. Ranzani, Mario Sergio Scaramuzzini Torres, Silvano Barbosa de Oliveira, Maria Almiron, Rodrigo Said, Ryan Borg, Wade L. Schulz, Roberto Dias de Oliveira, Patricia Vieira da Silva, Daniel Barros de Castro, Vanderson de Souza Sampaio, Bernardino Cláudio de Albuquerque, Tatyana Costa Amorim Ramos, Shadia Hussami Hauache Fraxe, Cristiano Fernandes da Costa, Felipe Gomes Naveca, Andre M. Siqueira, Wildo Navegantes de Araújo, Jason R. Andrews, Derek A.T. Cummings, Albert I. Ko, Julio Croda

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