All Otavio Ranzani articles
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NewsBeing infected or vaccinated first influences COVID-19 immunity
A new study analysing the immune response to COVID-19 sheds light on an important question: does it matter whether a person was first infected or first vaccinated? According to the results, the order of the events does alter the outcome.
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NewsQdenga vaccine shows effectiveness against dengue under real-world conditions during Brazil’s 2024 outbreak
An international team of researchers has demonstrated that the tetravalent dengue vaccine Qdenga provides significant protection against the disease under real-world conditions, during the large 2024 epidemic in São Paulo, Brazil.
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NewsResearchers advise strengthening immunity against COVID-19 in people with cancer
Researchers who led a study on the effectiveness of vaccines against COVID-19 among cancer patients in Catalonia, have recommended administering additional doses of the vaccine among this risk population.