New strains of SARS-Cov-2, such as the one identified in the United Kingdom in December, could make the pathogen more transmissible and virulent
The vaccines from BioNTech/Pfizer and Moderna result from historical investments in messenger RNA technology leading to the creation of new products
Governments need to work with pharmaceutical and logistics companies to overcome obstacles to start the SARS-CoV-2 immunization campaign
Amid uncertainty, São Paulo announces state vaccination plan
