The V410L knockdown resistance mutation occurs in island and continental populations of Aedes aegypti in West and Central Africaby Ayres et al.
These results suggest that populations carrying the same kdr mutations may respond differently to the same insecticide, stressing the need for complementary studies when assessing the impact of kdr resistance mechanisms in the outcome of insecticide-based control strategies.
Recombination of B- and T-cell epitope-rich loci from Aedes- and Culex-borne flaviviruses shapes Zika virus epidemiologyby Gaunt et al.
Findings from this article explain why explosive ZIKV epidemics occurred in DENV-endemic regions of Micronesia, Polynesia and the Americas where Culex-borne flavivirus outbreaks are infrequent, and why ZIKV did not cause major epidemics in Asia where Culex-borne flaviviruses are widespread.
Phylogeography and invasion history of Aedes aegypti, the Dengue and Zika mosquito vector in Cape Verde islands (West Africa)by Salgueiro et al.
The authors of this study performed a phylogeographic and population genetics study of A. aegypti in Cape Verde in order to infer the geographic origin and evolutionary history of this mosquito.
The authors of this study review the mosquito and vertebrate host species potentially involved in ZIKV vector-borne transmission worldwide; provide an evidence-supported analysis regarding the possibility of ZIKV spillback from an urban cycle to a zoonotic cycle outside Africa; and review hypotheses regarding recent emergence and evolution of ZIKV.
Phenotypic Differences between Asian and African Lineage Zika Viruses in Human Neural Progenitor Cellsby Anfasa et al.
Taken together, this study shows that African and Asian ZIKV strains differ in their abilities to infect and replicate in different neural cells, as well as their abilities to cause cell death early after infection. This implies that caution is necessary against extrapolation of experimental data obtained using historical African ZIKV strains to the current outbreak. In addition, the fact that Asian ZIKV strains infect only a minority of cells with a relatively low burst size together with the lack of early cell death induction might contribute to their ability to cause chronic infections within the CNS.