From chaos to clarity: The scientometric breakthrough in COVID-19 research.

Background: The COVID-19 pandemic paralyzed the world for over three years, generating unprecedented social changes in recent human history.

Aims: We aimed to scientometrically summarize a global and temporal overview of publications on COVID-19 in the two worst years of the pandemic and its progression in early 2022, after the start of vaccination.

Methods: Using the Web of Science database, this review covered the period from late 2019 to March 2022 and included all publications identified using the following terms: "SARS-CoV-2", "COVID-19", "Coronavirus Disease 19", and "2019-nCoV".

Relationship between SARS-CoV-2 vaccination and cases, program breakthrough cases, and deaths in Dois Vizinhos, Paraná, Brazil.

Several vaccines have been produced in 2 years of the COVID-19 pandemic to control the infection outbreak. This study demonstrated the success of vaccination in controlling COVID-19 cases and deaths in a small city (41 424 people) with a low population density in Brazil. This study was based on a 1-year dataset since the application of the first dose in January 2021.