Study registration: *
Publication Hitchings M, medRxiv, 2021
Dates: 2020-10-21 to 2021-04-13
Funding: Public/non profit (Pan American Health Organization's support to the Fundação de Vigilância em Saúde from Amazonas State and the Municipal Health Secretary of Manaus in making the databases available for analysis. JC and AS are supported by the Oswaldo Cruz Foundation. OTR is funded by a Sara Borrell fellowship from the Instituto de Salud Carlos III. OTR acknowledges support from the Spanish Ministry of Science and Innovation through the Centro de Excelencia Severo Ochoa 2019-2023 Program and from the Generalitat de Catalunya through the CERCA Program.)
Conflict of interest: no COI (We declare no competing interests.)