Epidemiologic and Virologic Characteristics of Influenza in Lao PDR, 2016-2023.

BACKGROUND: Influenza sentinel surveillance in Lao PDR is used to inform seasonal vaccination programs. This analysis reviews epidemiologic and virologic characteristics of influenza virus infection over 8 years, before and after emergence of SARS-CoV-2. METHODS: Data collected for ILI and SARI surveillance during January 2016 through December 2023 were analyzed from nine hospitals. Respiratory specimens from ILI and SARI cases were tested by reverse transcriptase polymerase chain reaction to determine influenza positivity and subtype and lineage. Aggregate counts of outpatient visits and hospitalizations were collected from hospital logbooks. Epidemiologic trends of influenza activity were described, and the proportional contribution of influenza-associated ILI and SARI to outpatient and inpatient loads was estimated. RESULTS: Influenza was detected year-round with positivity peaking during September through January and occurring in most years approximately 1 month earlier in the south than the north. After decreasing in 2 years following the emergence of SARS-CoV-2, influenza positivity increased in 2022 and resumed its typical temporal trend. Influenza-associated ILI contribution to outpatient visits was highest among children ages 5-14 years (3.0% of all outpatient visits in 2023), and influenza-associated SARI contribution to inpatient hospitalizations was highest among children ages 2-4 years (2.2% of all hospitalizations in 2023). CONCLUSIONS: Influenza surveillance in Lao PDR provides clinicians and public health authorities with information on geographic and temporal patterns of influenza transmission. Influenza surveillance data support current vaccination timing and recommendations to vaccinate certain populations, especially young children.

Associations of functional health literacy with socioeconomic and demographic status among Filipinos.

BACKGROUND: Health literacy determines an individual's decision-making process in providing judgment concerning appropriate healthcare. Considering the various purposes of literacy for people, functional health literacy (FHL) was identified as a type of literacy that is measured by the application of literacy skills to health-related materials as a result of health education. The objective of this study was to identify the possible socio-demographic correlates of FHL of Filipinos. METHODS: A cross-sectional survey was conducted among 2,303 Filipinos aged 15 to 70 years old in 2018-2019 utilizing the National Health Literacy Survey. Functional health literacy was determined using the FHL-5 Test which measured prose, document, and numeracy skills. Descriptive analysis presented socio-demographic characteristics and level of FHL. Log-binomial regression was used to estimate associations of FHL adequacy with socio-demographic characteristics. RESULTS: Overall, the study involved 1,997 (86.7%) qualified participants. Most of them demonstrated prose literacy skills and had adequate FHL. Adjusted regression analyses showed that participants with a college-level education (Adjusted prevalence ratio [APR]: 1.43, 95% confidence interval [95% CI] 1.27-1.60), categorized under domestic service occupation (APR 1.19, 95% CI: 1.03-1.37), and those residing in urban areas (APR: 1.14, 95% CI 1.06-1.24) were significantly more prevalent in exhibiting FHL adequacy. In contrast, male participants and individuals aged 60 years or above were less likely to demonstrate FHL adequacy. CONCLUSIONS: The study presents a baseline assessment of the functional health literacy level, measured using the FHL-5 Test, of adults in the Philippines. Majority of the participants demonstrated FHL adequacy, with relatively higher scores in prose than numeracy literacy. The measurement of FHL adequacy can inform policies on methods of health education and communication, emphasizing the need to stratify the audience based on socio-demographic characteristics and adapt the content and design of informational materials for population-based health educational programs.

Prevalence of Limited Health Literacy in the Philippines: First National Survey.

BACKGROUND: Health literacy (HL) is the ability to access, understand, appraise, and apply health information across the three domains of the health continuum: health care, disease prevention, and health promotion. It is needed for people to effectively manage their health. Information on population HL level is useful for crafting appropriate and targeted interventions to improve HL. OBJECTIVE: The aim of this study was to describe the HL level of Filipino people at the national and subnational levels. METHODS: A cross-sectional survey was conducted between 2018 and 2019 with 2,303 randomly selected Filipino people age 15 to 70 years, using an adapted Asia version of the European Health Literacy Survey Questionnaire-47. Prevalence estimates for limited HL and the corresponding 95% confidence interval (CI) were computed at the national and subnational levels. KEY RESULTS: The nationwide prevalence of limited HL was 51.5% (95% CI, [49.5%, 53.6%]), while sub-national prevalence estimates ranged from 48.2% to 65.4%. The prevalence varied across HL dimensions, with difficulty in access to information having the highest level. Similarly, prevalence across domains was variable; health care-related HL had the highest prevalence of limited HL. The HL levels for different dimensions and domains also varied across subnational groups. CONCLUSION: Many Filipino people had limited HL, and prevalence estimates varied across HL dimensions, HL domains, subnational groupings, and sociodemographic characteristics. The results highlight the need for targeted interventions focusing on subgroups with limited HL and on dimensions and domains where Filipino people have limited HL. [HLRP: Health Literacy Research and Practice. 2022;6(2):e104-e112.] Plain Language Summary: The National Health Literacy Survey is the first nationwide survey on the prevalence of HL in the Philippines, involving 2,303 randomly selected Filipino residents age 15 to 70 years. Many Filipino people have limited HL, and the prevalence of HL varies across the components of HL, subnational groupings, and sociodemographic characteristics, highlighting the need for targeted interventions.

First human infection of avian influenza A(H5N6) virus reported in Lao People's Democratic Republic, February-March 2021.

In March 2021, Lao People's Democratic Republic (Laos) reported an avian influenza A(H5N6) virus infection in a 5-year-old child identified through sentinel surveillance. This was the first human A(H5N6) infection reported outside of China. A multidisciplinary investigation undertook contact tracing and enhanced human and animal surveillance in surrounding villages and live bird markets. Seven Muscovy ducks tested positive for highly pathogenic avian influenza A(H5N6) viruses. Sequenced viruses belonged to clade 2.3.4.4h and were closely related to viruses detected in poultry in Vietnam and to previous viruses detected in Laos. Surveillance and coordinated outbreak response remain essential to global health security.