… in the period of the Delta variant predominance, as long the vaccination program progressed.
… propose to carry out epidemiological surveillance in a country with continental proportions. …

… This work provides a first view of how Delta has repeatedly entered Brazil. Still, we … surveillance
programs across the country. Enhancing comprehensive genomic surveillance programs …

… Delta to reach such prevalence. The REACT-1 program demonstrates the value of
community surveillance … Whereas the emergence of the Delta variant of SARS-CoV-2 was …

… surveillance program. Nevertheless, a reduction in its frequency was observed since EW
12/2021 in the MABA, being replaced by VOCs and VOIs of more recent emergence, such as …

… Additionally, to assess the extent of waning immunity of mRNA COVID-19 vaccines against
the Delta variant in Japan, we evaluated vaccine effectiveness separately between two …

… In this review, we describe the important factors influencing SARS-CoV-2 transmission, with
particular attention to unique features of the delta era. We outline modes of transmission and …

… , and seroconversion rates in secondary schools during the 2020/21 academic year, which
included the emergence of the more transmissible alpha and delta variants, in England. …

… Samples from both cases (Case A—day 2 after onset, Case B—day 3) underwent whole
genome sequencing as part of the prospective genomic surveillance programme in New South …

… whole-genome sequencing surveillance data from March to … , Gamma, or Delta variants
compared with the Alpha variant after full … SARS-CoV-2 molecular surveillance program (37). The …

… , and emphasize the importance of continuous molecular surveillance. Meanwhile, these
studies are significant for the guidance of the epidemic control and effective vaccination: (1) …