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Chad (TCD) 🇹🇩
Republic of Chad / République du Tchad / チャド共和国 /

SARS-CoV-2 variant sequences

The graph below presents the distribution of SARS-CoV-2 variant sequences over time, disaggregated by variants of concern (VOC), variants of interest (VOI), and variants under monitoring (VUM). Untracked variants are classified under the 'Other' category.

Figure 1: Distribution of SARS-CoV-2 Variant Sequences in Chad

SARS-CoV-2 lineages

Select one or more SARS-CoV-2 Pango lineages using the tool below to view their prevalence over time.

Lineage reference
Available lineages (scroll to view more):
Selected lineages:

Note on potential biases

Please note, samples may be subject to bias resulting from:

  • geographical clustering in submission of sequences;
  • demographic clustering in submission of sequences; and,
  • mutation clustering arising from prioritised sequencing of samples with particular mutations

Recommended citation

Hassan R. S. Andrabi. 2022. "CoVstrain: Sequencing Distributions of SARS-CoV-2 Mutations of Interest." https://covstrain.com/
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Last updated:
08 Aug 2022