Notes from the Field: Chlorination Strategies for Drinking Water During a Cholera Epidemic - Tanzania, 2016.

Since August 2015, the Ministry of Health, Community Development, Gender, Elderly and Children (MoHCDGEC) of Tanzania has been leading the response to a widespread cholera outbreak. As of June 9, 2016, cholera had affected 23 of 25 regions in Tanzania, with 21,750 cumulative cases and 341 deaths reported (Ally Nyanga, MoHCDGEC Emergency Operations Center, personal communication, June 2016). Approximately one fourth of all cases occurred in the Dar es Salaam region on the east coast. Regions surrounding Lake Victoria, in the north, also reported high case counts, including Mwanza with 9% (Ally Nyanga, MoHCDGEC Emergency Operations Center, personal communication, June 2016). Since the start of the outbreak, MoHCDGEC and the Ministry of Water (MOW) have collaborated with the Tanzania Red Cross Society, United Nations Children's Fund (UNICEF), World Health Organization (WHO), and CDC to enhance the water, sanitation, and hygiene (WASH) response to prevent the further spread of cholera.

Improving water, sanitation, and hygiene (WASH), with a focus on hand hygiene, globally for community mitigation of COVID-19.

Continuity of key water, sanitation, and hygiene (WASH) infrastructure and WASH practices-for example, hand hygiene-are among several critical community preventive and mitigation measures to reduce transmission of infectious diseases, including COVID-19 and other respiratory diseases. WASH guidance for COVID-19 prevention may combine existing WASH standards and new COVID-19 guidance. Many existing WASH tools can also be modified for targeted WASH assessments during the COVID-19 pandemic. We partnered with local organizations to develop and deploy tools to assess WASH conditions and practices and subsequently implement, monitor, and evaluate WASH interventions to mitigate COVID-19 in low- and middle-income countries in Latin America and the Caribbean and Africa, focusing on healthcare, community institution, and household settings and hand hygiene specifically. Employing mixed-methods assessments, we observed gaps in access to hand hygiene materials specifically despite most of those settings having access to improved, often onsite, water supplies. Across countries, adherence to hand hygiene among healthcare providers was about twice as high after patient contact compared to before patient contact. Poor or non-existent management of handwashing stations and alcohol-based hand rub (ABHR) was common, especially in community institutions. Markets and points of entry (internal or external border crossings) represent congregation spaces, critical for COVID-19 mitigation, where globally-recognized WASH standards are needed. Development, evaluation, deployment, and refinement of new and existing standards can help ensure WASH aspects of community mitigation efforts that remain accessible and functional to enable inclusive preventive behaviors.

Alternative Water Transport and Storage Containers: Assessing Sustained Use of the PackH2O in Rural Haiti.

The PackH2O water backpack carrier was developed to provide safe storage and relieve stress of head-loading during water transport with traditional containers such as buckets and jerry cans. We conducted an evaluation to assess both self-reported and observed use over a 6-month period between November 2014 and May 2015. A total of 866 packs were distributed to 618 households in six communities in rural Haiti, and 431 and 441 households were surveyed at midline and end line, respectively. We performed linear regression to assess change of self-reported use over time. Although 79.3% of respondents reported continued use of the 20-L pack after 6 months, other measures of self-reported use were low, with only 16.8% reporting to have used the pack the last time they collected water and 10.3% preferring the pack over other water collection containers. In addition, only 10.2% of all people collecting water at community sources were observed using packs and 12.0% of all households surveyed had water in the pack at the time of visit. Pack use varied by community and demographics. Although women were targeted during distribution, men preferred the pack and were more commonly observed using it at the community water sources. In conclusion, the use of the PackH2O was not widely adopted in rural Haiti; however, further research is needed to assess the pack acceptance in areas where back-loading is more common and in emergency settings.

Evaluation of an Emergency Bulk Chlorination Project Targeting Drinking Water Vendors in Cholera-Affected Wards of Dar es Salaam and Morogoro, Tanzania.

In August 2015, an outbreak of cholera was reported in Tanzania. In cholera-affected areas of urban Dar es Salaam and Morogoro, many households obtained drinking water from vendors, who sold water from tanks ranging in volume from 1,000 to 20,000 L. Water supplied by vendors was not adequately chlorinated. The Tanzanian Ministry of Health, Community Development, Gender, Elderly and Children and the U.N. Children's Fund, Tanzania, collaborated to enroll and train vendors to treat their water with 8.68-g sodium dichloroisocyanurate tablets (Medentech, Ireland). The Centers for Disease Control and Prevention (CDC) provided monitoring and evaluation support. Vendors were provided a 3-month supply of chlorine tablets. A baseline assessment and routine monitoring were conducted by ward environmental health officers. Approximately 3 months after chlorine tablet distribution, an evaluation of the program was conducted. The evaluation included a full enumeration of all vendors, an in-depth survey with half of the vendors enumerated, and focus group discussions. In total, 797 (88.9%) vendors were included in the full enumeration and 392 in the in-depth survey. Free residual chlorine (FRC) was detected in 12.0% of tanks at baseline and 69.6% of tanks during the evaluation; however, only 17.4% of these tanks had FRC ≥ 0.5 mg/L. The results suggest high acceptability and use of the chlorine tablets by water vendors. However, given variation in the water source used and longer storage times, dosing could be increased in future programming. Bulk chlorination using chlorine tablets offers an efficient community-level approach to treating water closer to the point of use.

Strengthening Healthcare Facilities Through Water, Sanitation, and Hygiene (WASH) Improvements: A Pilot Evaluation of "WASH FIT" in Togo.

Water, sanitation, and hygiene (WASH) services in healthcare facilities are essential to ensure quality health care and to facilitate infection, prevention, and control practices. They are critical to responding to outbreaks and preventing healthcare-associated infections and, therefore, critical to global health security. Many healthcare facilities in low- and middle-income settings have limited WASH services. One tool to address this issue is the World Health Organization (WHO) and United Nations Children's Fund (UNICEF) Water and Sanitation for Health Facility Improvement Tool, or "WASH FIT." WASH FIT is a continuous improvement tool based on key WHO environmental health and infection, prevention, and control standards. While using WASH FIT, internal teams regularly perform self-assessments at their facilities, using up to 65 WASH indicators to develop and implement an improvement plan. The Ministry of Health and Social Protection (MSPS) in Togo, with support from WHO and the US Centers for Disease Control and Prevention (CDC), piloted this tool in 3 healthcare facilities. The pilot included facility assessments at 3 time points and in-depth interviews and document review 7 months after initiating WASH FIT. Facilities made improvements without significant external financial or material support. On average, pilot facilities improved from 18% of total indicators meeting standards at baseline to 44% after 7 months. Examples included improved drinking water supply, medical waste segregation, and increased soap at handwashing stations. Participants reported improvements in staff and patient satisfaction, hand hygiene, and occupational safety. Findings suggest that WASH FIT, coupled with training and supervision, may help facilities improve WASH services and practices, thus contributing to global health security. Based on these findings, the Togolese MSPS plans to scale up nationwide. Les services d'eau, d'assainissement, et d'hygiène (WASH) dans les établissements de santé sont essentiels pour assurer des soins de qualité et faciliter les pratiques de prévention et contrôle des infections. Ils sont essentiels pour répondre aux épidémies et prévenir les infections associées aux soins de santé, et donc à la sécurité sanitaire mondiale. De nombreux pays à revenu faible ou intermédiaire ont des services WASH limités dans les établissements de soins. Un outil récemment publié pour remédier cette situation est l'outil WASH FIT [Water and Sanitation for Health Facility Improvement Tool] de l'Organisation mondiale de la Santé (OMS) et le Fonds des Nations Unies (UNICEF) pour l'amélioration de l'eau et l'assainissement dans les formations sanitaires. WASH FIT est un outil d'amélioration continue basé sur les normes de l'OMS en matière de santé environnementale et de prévention et contrôle des infections. Lors de l'utilisation de WASH FIT, les équipes internes effectuent régulièrement des auto-évaluations dans leurs installations en utilisant jusqu'à 65 indicateurs pour élaborer et mettre en œuvre leur plan d'amélioration. Le ministère de la Santé et de la Protection Sociale (MSPS) du Togo, avec le soutien de l'OMS et les Centres pour le contrôle et la prévention des maladies (CDC), a fait un pilotage de cet outil dans 3 centres de santé. Ce pilotage comprenait 3 évaluations dans chaque formation sanitaire, des interviews approfondies, et une revue documentaire, 7 mois après l'initiation du WASH FIT. Les formations sanitaires ont réalisé des progrès, sans aide financière ou matérielle extérieure. En moyenne, les formations sanitaires sont passées de 18% des indicateurs atteignant les standards au départ, à 44% après 7 mois. Les exemples incluent l'approvisionnement en eau potable, le tri des déchets médicaux, et le savon aux points de lavage des mains. Les participants ont signalé des améliorations dans la satisfaction du personnel et des patients, l'hygiène des mains, et la sécurité au travail. Les résultats indiquent que WASH FIT, associé à la formation et à la supervision, pourrait être un outil pour aider les formations sanitaires à améliorer les services et pratiques WASH, contribuant ainsi à la sécurité sanitaire mondiale. Sur la base de ces résultats, le MSPS prévoit une extension à l'échelle nationale.