METHODOLOGY/PRINCIPAL FINDINGS: We used 13 nuclear microsatellite loci (on 911 individuals) and mitochondrial COI sequences to gain a better understanding of the historical and contemporary movements of Ae. albopictus in the Indo-Pacific region and to characterize its population structure. Approximate Bayesian computation (ABC) was employed to test competing historical routes of invasion of Ae. albopictus within the Southeast (SE) Asian/Australasian region. Our ABC results show that Ae. albopictus was most likely introduced to New Guinea via mainland Southeast Asia, before colonizing the Solomon Islands via either Papua New Guinea or SE Asia. The analysis also supported that the recent incursion into northern Australia's Torres Strait Islands was seeded chiefly from Indonesia. For the first time documented in this invasive species, we provide evidence of a recently colonized population (the Torres Strait Islands) that has undergone rapid temporal changes in its genetic makeup, which could be the result of genetic drift or represent a secondary invasion from an unknown source.
CONCLUSIONS/SIGNIFICANCE: There appears to be high spatial genetic structure and high gene flow between some geographically distant populations. The species' genetic structure in the region tends to favour a dispersal pattern driven mostly by human movements. Importantly, this study provides a more widespread sampling distribution of the species' native range, revealing more spatial population structure than previously shown. Additionally, we present the most probable invasion history of this species in the Australasian region using ABC analysis.
OBJECTIVE: To determine medications available and used in the management of six symptoms at the end of life among pediatric palliative care practitioners in Asia Pacific. To identify alternative pharmacological strategies for these six symptoms if the oral route was no longer possible and injections are refused.
DESIGN AND SETTING: An online survey of all Asia Pacific Hospice Palliative Care Network (APHN) members was carried out to identify medications used for six symptoms (pain, dyspnea, excessive respiratory secretions, nausea/vomiting, restlessness, seizures) in dying children. Two scenarios were of interest: (1) hours to days before death and (2) when injectables were declined or refused.
RESULTS: There were 54 responses from 18 countries. Majority (63.0%) of respondents were hospital based. About half of all respondents were from specialist palliative care services and 55.6% were from high-income countries. All respondents had access to essential analgesics. Several perceived that there were no available drugs locally to treat the five other commonly encountered symptoms. There was a wide variation in preferred drugs for treating each symptom that went beyond differences in drug availability or formulations.
CONCLUSION: Future studies are needed to explore barriers to medication access and possible knowledge gaps among service providers in the region, so that advocacy and education endeavors by the APHN may be optimized.