Covid

Effectiveness of an inactivated Covid-19 vaccine with homologous and heterologous boosters against Omicron in Brazil

Ranzani OT, Hitchings MDT, De Melo RL, ..., Ko AI, Croda J

Oct 6, 2022

Primary healthcare protects vulnerable populations from inequity in COVID-19 vaccination: An ecological analysis of nationwide data from Brazil

Bastos LSL, Aguilar S, Rache B, Maçaira P, Baião F, Cerbino-Neto J, Rocha R, Hamacher S, Ranzani OT, Bozza FA

Oct 1, 2022

Lessons From the COVID-19 Pandemic in Latin America: Vulnerability Leading to More Vulnerability

Halpern B, Ranzani OT

Aug 1, 2022

Vaccine effectiveness of ChAdOx1 nCoV-19 against COVID-19 in a socially vulnerable community in Rio de Janeiro, Brazil: author's response

Ranzani OT, Bozza FA

Aug 1, 2022

Spatial and temporal fluctuations in COVID-19 fatality rates in Brazilian hospitals

Brizzi A, Whittaker C, Servo LMS, Ranzani OT, ..., Bhatt S, Ratmann O

Jul 1, 2022

Use of Recently Vaccinated Individuals to Detect Bias in Test-Negative Case-Control Studies of COVID-19 Vaccine Effectiveness

Hitchings MDT, Lewnard JA, Dean NE, Ko AI, Ranzani OT, Andrews JR, Cummings DAT

Jul 1, 2022

Change in covid-19 risk over time following vaccination with CoronaVac: test negative case-control study

Hitchings MDT, Ranzani OT, Lind ML, ..., Ko AI, Croda J

Jun 13, 2022

Effectiveness of CoronaVac, ChAdOx1 nCoV-19, BNT162b2, and Ad26.COV2.S among individuals with previous SARS-CoV-2 infection in Brazil: a test-negative, case-control study

Cerqueira-Silva T, Andrews JR, Boaventura VS, Ranzani OT, ..., Croda J, Barral-Netto M

Jun 1, 2022

Vaccine effectiveness of ChAdOx1 nCoV-19 against COVID-19 in a socially vulnerable community in Rio de Janeiro, Brazil: a test-negative design study

Ranzani OT, Silva AAB, Peres IT, Antunes BBP, Gonzaga-Da-Silva TW, Soranz DR, Cerbino-Neto J, Hamacher S, Bozza FA

May 1, 2022

Booster doses for inactivated COVID-19 vaccines: if, when, and for whom

Croda J, Ranzani OT

Apr 1, 2022