Hand Hygiene Impacts.

 Studies published in 2022 cover various topics on hand hygiene impact. Most studies focus on assessing the effectiveness of different interventions in preventing and controlling diseases such as diarrheal disease, healthcare-associated infections, and parasitic infections. Several studies evaluated the effectiveness of hand hygiene practices in preventing or controlling diseases among children. A systematic review and meta-analysis by Wolf et al. (2022) reviewed and synthesized evidence on the effectiveness of interventions to improve drinking water, sanitation, and handwashing with soap on the risk of diarrheal disease in children in low- and middle-income settings. The study found that interventions that promoted hand hygiene were effective in reducing the risk of diarrheal disease among children under 5 years old by 30%. Findings from this study are consistent with previous studies that concluded handwashing with soap can reduce the risk of endemic diarrhea up to 30 to 48%. Ntshangase et al. (2022) investigated the prevalence of diarrhea and handwashing practices among children attending early childhood development centers in KwaZulu-Natal, South Africa. The study revealed a high prevalence of childhood diarrhea among children in early childhood development centers, with prevalence associated with the number of children in a household and handwashing practices among children and their parents or guardians. A cross-sectional study by Husen et al. (2022) assessed the frequency of intestinal helminth infections and their related risk factors among school children in Adola Town, Ethiopia. The prevalence of intestinal helminth infections among school children was reported as 33.91%, with the rate of double infection noted as 2.72%. The authors found significant associations with risk factors such as gender, education level, toilet usage and handwashing habits before feeding and after defecation. Sangalang et al. (2022) examined the association between school water, sanitation, and hygiene and diarrhea, malnutrition, and dehydration among children in Metro Manila, Philippines. The study found that over 28% of students had diarrhea and 68% were dehydrated. Diarrhea was associated with poor handwashing behavior, while dehydration was associated with the lack of water in school restrooms. Other publications focused on other impacts of hand hygiene, including healthcare-associated infections. Wong et al. (2022) focused on controlling healthcare-associated carbapenem-resistant Acinetobacter baumannii (CRAB). Through enhanced infection control measures, with emphasis on directly observed hand hygiene, hospital-onset CRAB infections decreased by 9.8% each year of the 5-year study period. Furthermore, a study by Fenny et al. (2022) evaluated the cost-effectiveness of a multimodal hand hygiene intervention involving alcohol-based hand rub for the prevention of neonatal bloodstream infections (BSI) in a neonatal intensive care unit in Ghana. Their analysis showed that the alcohol-based handrub program was effective in reducing patient cost of neonatal BSI by 41.7% and BSI-attributable hospital cost by 48.5%. Neonatal BSI attributable deaths and length of hospital stay also decreased by 73% and 50% respectively, highlighting the significant potential cost-savings benefits from hand hygiene interventions. While individual study results may vary, these studies show the breadth of hand hygiene impact across several health and development outcomes.