Abstract:
:Ten countries have reported pfhrp2/pfhrp3 gene deletions since the first observation of pfhrp2-deleted parasites in 2012. In a previous study (Watson et al., 2017), we characterised the drivers selecting for pfhrp2/3 deletions and mapped the regions in Africa with the greatest selection pressure. In February 2018, the World Health Organization issued guidance on investigating suspected false-negative rapid diagnostic tests (RDTs) due to pfhrp2/3 deletions. However, no guidance is provided regarding the timing of investigations. Failure to consider seasonal variation could cause premature decisions to switch to alternative RDTs. In response, we have extended our methods and predict that the prevalence of false-negative RDTs due to pfhrp2/3 deletions is highest when sampling from younger individuals during the beginning of the rainy season. We conclude by producing a map of the regions impacted by seasonal fluctuations in pfhrp2/3 deletions and a database identifying optimum sampling intervals to support malaria control programmes.
journal_name
Elifejournal_title
eLifeauthors
Watson OJ,Verity R,Ghani AC,Garske T,Cunningham J,Tshefu A,Mwandagalirwa MK,Meshnick SR,Parr JB,Slater HCdoi
10.7554/eLife.40339subject
Has Abstractpub_date
2019-05-02 00:00:00issn
2050-084Xpii
40339journal_volume
8pub_type
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