Detection of High Level of Co-Infection and the Emergence of Novel SARS CoV-2 Delta-Omicron and Omicron-Omicron Recombinants in the Epidemiological Surveillance of Andalusia.

An increasing trend of co-infection events is observed, from 0.33% samples sequenced in January which raises up to 1.63% by March, although in April and May seems to reduce again ( Figure 3 ). 2.3.

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It is interesting to note how April and May show a decreasing trend in both co-infections and recombinants as the new omicron lineages take over the existing lineages (see Figure 1 A).

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