Falciparum malaria from coastal Tanzania and Zanzibar remains highly connected despite effective control efforts on the archipelago. - Morgan, Andrew P.; Brazeau, Nicholas F.; Ngasala, Billy; Mhamilawa, Lwidiko E.; Denton, Madeline; Msellem, Mwinyi; Morris, Ulrika; Filer, Dayne L.; Aydemir, Ozkan; Bailey, Jeffrey A.; Parr, Jonathan B.; Mårtensson, Andreas; et al. (Malaria Journal, 2020)