The Brazilian Government, vide its Ordinance No. 658 dated 5 October 2021, removed the specific entry restrictions on the travellers from India, the UK and South Africa. All foreign travellers would now be subjected to the standard procedures as followed in the case of other international travellers, viz. to provide a negative RT-PCR test to the airlines with the test being conducted up to 72 hrs before boarding.
For more details, please read the original ordinance available at https://www.gov.br/casacivil/pt-br/assuntos/notas-oficiais/nota-oficial-casa-civil-5-10-2021.