However, while the number of annual malaria cases decreased steadily between 2000 and 2014, an increasing trend has been observed since 2015, with 3658 cases reported in 2020, and 82.6% of those cases were in Jazan region 20 , 21 .
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Polymorphism analysis of pfmdr1 gene in Plasmodium falciparum isolates 11 years post-adoption of artemisinin-based combination therapy in Saudi Arabia.
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