Impact of malaria diagnostic choice on monitoring of Plasmodium falciparum prevalence estimates in the Democratic Republic of the Congo and relevance to control programs in high-burden countries.

Malaria programs rely upon a variety of diagnostic assays, including rapid diagnostic tests (RDTs), microscopy, polymerase chain reaction (PCR), and bead-based immunoassays (BBA), to monitor malaria prevalence and support control and elimination efforts. Data comparing these assays are limited, especially from high-burden countries like the Democratic Republic of the Congo (DRC). Using cross-sectional and routine data, we compared diagnostic performance and Plasmodium falciparum prevalence estimates across health areas of varying transmission intensity to illustrate the relevance of assay performance to malaria control programs. Data and samples were collected between March-June 2018 during a cross-sectional household survey across three health areas with low, moderate, and high transmission intensities within Kinshasa Province, DRC. Samples from 1,431 participants were evaluated using RDT, microscopy, PCR, and BBA. P. falciparum parasite prevalence varied between diagnostic methods across all health areas, with the highest prevalence estimates observed in Bu (57.4-72.4% across assays), followed by Kimpoko (32.6-53.2%), and Voix du Peuple (3.1-8.4%). Using latent class analysis to compare these diagnostic methods against an "alloyed gold standard," the most sensitive diagnostic method was BBA in Bu (high prevalence) and Voix du Peuple (low prevalence), while PCR diagnosis was most sensitive in Kimpoko (moderate prevalence). RDTs were consistently the most specific diagnostic method in all health areas. Among 9.0 million people residing in Kinshasa Province in 2018, the estimated P. falciparum prevalence by microscopy, PCR, and BBA were nearly double that of RDT. Comparison of malaria RDT, microscopy, PCR, and BBA results confirmed differences in sensitivity and specificity that varied by endemicity, with PCR and BBA performing best for detecting any P. falciparum infection. Prevalence estimates varied widely depending on assay type for parasite detection. Inherent differences in assay performance should be carefully considered when using community survey and surveillance data to guide policy decisions.

Is the World Health Organization Multimodal Hand Hygiene Improvement Strategy applicable and effective at the primary care level in resource-limited settings? A quantitative assessment in healthcare centers of Faranah, Guinea.

Background: The World Health Organization Multimodal Hand Hygiene Improvement Strategy aims at reducing healthcare-associated infections; however, evidence of applicability and effectiveness at the primary care level is scarce, especially in healthcare centers in resource-limited settings. The objectives of this study were to improve hand hygiene knowledge and compliance at two healthcare centers in the region of Faranah, Guinea, to increase the availability of alcohol-based hand rub (ABHR), and to assess the effectiveness of the strategy at the primary care level. Methods: Knowledge, perceptions, and compliance were assessed prior to the intervention and compared to those of two follow-up assessments, immediately and 6 months after the intervention. The intervention consisted of training and the supply of ABHR. The monthly consumption of ABHR was monitored. Results: Baseline knowledge increased from a score of 11/25 at baseline to 16/25 at first follow-up; it then decreased to 15/25 at the second follow-up. Compliance showed an increase from 15.6% to 84.4% (P < 0.001) at the first follow-up. At the second follow-up, compliance was lower than at the first follow-up (53.2%, P < 0.001), but still more than two times higher than at baseline (P < 0.001). ABHR consumption averaged 0.77 ml per consultation. Conclusions: The World Health Organization hand hygiene strategy is an appropriate method to improve compliance and knowledge at the primary care level, but needs some adjustment: the inclusion of observation of the correctness of hand hygiene action, as well as training emphasizing the amount of ABHR to use.

Infection prevention and control training and capacity building during the Ebola epidemic in Guinea.

BACKGROUND: During the 2014-2016 Ebola epidemic in West Africa, a key epidemiological feature was disease transmission within healthcare facilities, indicating a need for infection prevention and control (IPC) training and support. METHODS: IPC training was provided to frontline healthcare workers (HCW) in healthcare facilities that were not Ebola treatment units, as well as to IPC trainers and IPC supervisors placed in healthcare facilities. Trainings included both didactic and hands-on components, and were assessed using pre-tests, post-tests and practical evaluations. We calculated median percent increase in knowledge. RESULTS: From October-December 2014, 20 IPC courses trained 1,625 Guineans: 1,521 HCW, 55 IPC trainers, and 49 IPC supervisors. Median test scores increased 40% (interquartile range [IQR]: 19-86%) among HCW, 15% (IQR: 8-33%) among IPC trainers, and 21% (IQR: 15-30%) among IPC supervisors (all P<0.0001) to post-test scores of 83%, 93%, and 93%, respectively. CONCLUSIONS: IPC training resulted in clear improvements in knowledge and was feasible in a public health emergency setting. This method of IPC training addressed a high demand among HCW. Valuable lessons were learned to facilitate expansion of IPC training to other prefectures; this model may be considered when responding to other large outbreaks.