Microscopic Plasmodium falciparum Gametocytemia and Infectivity to Mosquitoes in Cambodia

被引:40
作者
Lin, Jessica T. [1 ]
Ubalee, Ratawan [4 ]
Lon, Chanthap [6 ]
Balasubramanian, Sujata [1 ]
Kuntawunginn, Worachet [5 ]
Rahman, Rifat [1 ]
Saingam, Piyaporn [5 ]
Thay Kheang Heng [7 ]
Dav Vy [8 ]
San, Savoeun [9 ]
Nuom, Sarath [6 ]
Burkly, Hana [5 ]
Chanarat, Nitima [5 ]
Ponsa, Chanudom [4 ]
Levitz, Lauren [2 ]
Parobek, Christian [3 ]
Chuor, Char Meng [7 ]
Somethy, Sok [8 ]
Spring, Michele [5 ]
Lanteri, Charlotte [5 ]
Gosi, Panita [5 ]
Meshnick, Steven R. [2 ]
Saunders, David L. [5 ]
机构
[1] Univ N Carolina, Sch Med, Div Infect Dis, 130 Mason Farm Rd,Ste 2115,CB 7030, Chapel Hill, NC 27599 USA
[2] Univ N Carolina, Gillings Sch Global Publ Hlth, Dept Epidemiol, 130 Mason Farm Rd,Ste 2115,CB 7030, Chapel Hill, NC 27599 USA
[3] Univ N Carolina, Curriculum Genet & Mol Biol, 130 Mason Farm Rd,Ste 2115,CB 7030, Chapel Hill, NC 27599 USA
[4] Armed Forces Res Inst Med Sci, Dept Entomol, Bangkok 10400, Thailand
[5] Armed Forces Res Inst Med Sci, Dept Immunol & Med, Bangkok 10400, Thailand
[6] Armed Forces Res Inst Med Sci, Phnom Penh, Cambodia
[7] Natl Malaria Ctr, Phnom Penh, Cambodia
[8] Royal Cambodian Armed Forces, Phnom Penh, Cambodia
[9] Battambang Referral Hosp, Battambang, Cambodia
关键词
gametocyte; membrane feeding; infectious reservoir; malaria transmission; Plasmodium falciparum; submicroscopic; Anopheles dirus; MALARIA INFECTIONS; TRANSMISSION; RELEVANCE;
D O I
10.1093/infdis/jiv599
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Although gametocytes are essential for malaria transmission, in Africa many falciparum-infected persons without smear-detectable gametocytes still infect mosquitoes. To see whether the same is true in Southeast Asia, we determined the infectiousness of 119 falciparum-infected Cambodian adults to Anopheles dirus mosquitoes by membrane feeding. Just 5.9% of subjects infected mosquitoes. The 8.4% of patients with smear-detectable gametocytes were >20 times more likely to infect mosquitoes than those without and were the source of 96% of all mosquito infections. In low-transmission settings, targeting transmission-blocking interventions to those with microscopic gametocytemia may have an outsized effect on malaria control and elimination.
引用
收藏
页码:1491 / 1494
页数:4
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