Strengthening laboratories in response to outbreaks in humanitarian emergencies and conflict settings: Results, challenges and lessons from expanding PCR diagnostic capacities for COVID-19 testing in Yemen

BACKGROUND

When the COVID-19 pandemic was declared, Yemen, a country facing years of conflict had only one laboratory with PCR testing capacity. In this article, we describe the outcome of the implementation of molecular based diagnostics platform in Yemen and highlight the key milestones the country went through to increase access to testing for its populations residing in a geographically vast and politically divided country.

METHODS

A retrospective assessment of COVID-19 laboratory response activities was done detailing the needs assessment process, timelines, geographical coverage, and outcomes of the activities. Laboratory data was analyzed to construct the geographical locations of COVID-19 testing laboratories and the numbers of tests performed in each facility to highlight the demands of testing for travelers. Finally, we discuss the impact these activities had in enabling the movement of people across international borders for economic gains and in delivery of critical humanitarian aid.

OUTCOME

PCR testing capacities in Yemen significantly improved, from one laboratory in Sanaa in April 2020 to 18 facilities across the country by June 2022. In addition, the number of functional Real-Time PCR thermocyclers increased from one to 32, the PCR tests output per day improved from 192 to 6144 tests per day. Results from analysis of laboratory data showed there were four peaks of COVID-19 in Yemen as October 2022. The majority of laboratory tests were performed for travelers than for medical or public health reasons. Demand for laboratory testing in Yemen was generally low and waned over time as the perceived risk of COVID-19 declined, in parallel with rollout of the COVID-19 vaccines.

DISCUSSION/CONCLUSION

The successful expansion of laboratory testing capacity was instrumental in the control and management of COVID-19 cases and critical in the implementation of public response strategies, including restrictions on gathering. Laboratory testing also facilitated the movement of humanitarian agencies and delivery of aid and enabled hundreds of thousands of Yemeni nationals to travel internationally. By virtue of these outcomes, the impact of laboratory strengthening activities was thus felt in the health sector and beyond.

The role of information technology in strengthening human resources for health

Purpose

– The purpose of this paper is to discuss innovative ways of addressing human resources for health (HRH) shortage in the Pacific, supported by a review of the literature and the Pacific Open Learning Health Network (POLHN), a programme created in response to the Pacific's HRH concern.

Design/methodology/approach

– A systematic search was conducted of English literature between 1990 and 2012. A number of key words, singly and/or in combination, were used to search for articles on ProQuest and PubMed. Original articles were identified and reference lists scrutinised to obtain additional literature. Due to the paucity of information, only narrative review was conducted and themes emerging from the literature identified and critically reviewed.

Findings

– There is a worldwide HRH shortage and a need to improve the skills of the health workforce to respond to changing population health needs. Continuing education (CE) through use of information technology (IT) is a means to strengthen HRH. POLHN is one example of an initiative to improve health worker skills and motivation. Technological change is increasingly common place in society. To make sense of these changes, practitioners can look for common themes in successful technological innovations of interactivity; information access, creation or sharing; communication; and simplicity. To ensure effective regulation of CE and IT there is a need to incorporate qualitative as well as quantitative measures, to prioritise the creation of quality, relevant, and appropriate resources and to facilitate access and active participation by health workers.

Originality/value

– The paper highlights the complexity of HRH shortage as a global problem, which demands multiple initiatives to respond to the shortage in the pursuit of skilled, equitable and just delivery of health services and distribution of health service providers. One initiative that has worked elsewhere is professional development of health professionals through the provision of CE using IT. Online learning offers a pathway to address HRH shortage and overcomes challenges posed by distance, limited infrastructure and in small remote communities. POLHN contributes to improved skills and knowledge among health professionals who can, as a result, deliver better health services in a region as geographically dispersed and isolated as the Pacific.

Fresnel membrane prisms: clinical experience

BACKGROUND

There are few published reports on the clinical application of Fresnel membrane prisms in the treatment of diplopia in adults. The authors describe the use of these prisms in patients with fourth and sixth cranial nerve palsies, restrictive motility caused by thyroid-related orbital disease, and convergence insufficiency.

METHODS

Of 209 patients who had been treated with Fresnel prisms, 141 were selected. The database included patients from a private practice in Montreal, seen from 1988 to 1996, and patients seen by orthoptists in the ophthalmology department of a children's hospital in Montreal between 1992 and 1996. All the patients had diplopia associated with fourth (48 patients) or sixth (43 patients) cranial nerve palsy, thyroid-related orbitopathy (18 patients) or convergence insufficiency (32 patients). After qualitative and quantitative assessment of the ocular misalignment, a Fresnel prism was selected for power and axis and for appropriate location on the spectacle lens. Ocular dominance and side of paresis or restriction were also considered in the placement of the prism. The patient's response to treatment was documented.

RESULTS

The Fresnel prisms were oriented horizontally in 72 patients (51%), vertically in 55 (39%) and obliquely in 14 (10%). They were placed on the spectacle lens before the nondominant eye in 127 cases (90%), either covering the entire lens, or on the upper or lower segment or both. The patients were followed for an average of 15 (range 2 to 96) months. Of the 141 patients 113 (80%) had a successful outcome, with relief of their diplopia. Twenty-seven patients (19%) eventually had the prismatic correction ground into the lens, 70 (50%) chose to wear the Fresnel prism on a permanent basis because incorporation into the lens was not possible or because of cost, and 17 (12%) used the Fresnel prism as a temporary device before or after surgery. Most patients who converted to incorporated prisms did so when the prismatic power became stable, usually after 6 to 8 months. Eight patients (6%) stopped using the prism because of associated side effects, such as blurred vision, persistent diplopia, torsion or optical aberrations.

INTERPRETATION

The Fresnel prism is an excellent device in treating diplopia in adult patients. It is a reasonable permanent option when incorporating the prism into the spectacle lens is not possible. A fused blurred image caused by a Fresnel prism placed in front of the nondominant eye is preferable to double but clear images.