Progress in Access and Oral Polio Vaccine Coverage Among Children Aged <5 Years in Polio Campaigns After the Political Change in Afghanistan.

BACKGROUND: Warfare has long impeded vaccination programs in polio-endemic Afghanistan. We aimed to describe progress in access to children under 5, oral polio vaccine (OPV) coverage among children under 5 in nationwide polio campaigns, and polio surveillance performance indicators after the Islamic Republic of Afghanistan collapsed to Taliban forces in August 2021. METHODS: Trends in the number of wild poliovirus type 1 (WPV1) and circulating vaccine-derived poliovirus type 2 (cVDPV2) cases and surveillance indicators from 2015 to 2023, and trends in the OPV coverage in the November 2020-June 2022 polio campaigns, were described. RESULTS: From 2015 to mid-July 2020, 74 of 126 (58.7%) WPV1 cases were reported from inaccessible areas. In November 2020, 34.1% of target children under 5 were inaccessible; in November 2021 (the first postchange polio campaign), all were accessible. From November 2020, under-5 OPV coverage of 69.9% rose steadily to 99.9% in the May 2022 campaign. The number of cVDPV cases fell from 308 (2020) to zero (2022). June 2022's house-to-house OPV coverage was 34.2% higher than non-house-to-house modalities. Nonpolio acute flaccid paralysis and stool adequacy rates rose from 18.5/100 000 and 92.6% in 2020 to 24.3/100 000 and 94.4% in 2022, respectively. CONCLUSIONS: Children's inaccessibility no longer vitiates polio eradication; polio surveillance systems are less likely to miss any poliovirus circulation.

Polio eradication initiative in Afghanistan, 1997-2013.

BACKGROUND: This article reviews the epidemiology of polio, acute flaccid paralysis (AFP) surveillance, and the implementation of supplemental immunization activities (SIAs) in Afghanistan from 1997 thru 2013. METHODS: Published reports and unpublished national data on polio cases, AFP surveillance, and SIAs were analyzed. Recommendations from independent advisory groups and Afghan government informed the conclusions. RESULTS: From 1997 thru 2013, the annual number of confirmed polio cases fluctuated from a low of 4 in 2004 to a high of 80 in 2011. Wild poliovirus types 2 and 3 were last reported in 1997 and 2010, respectively. Circulating vaccine-derived poliovirus type 2 emerged in 2009. AFP surveillance quality in children aged <15 years improved over time, achieving rates>8 per 100,000 population. Since 2001, at least 6 SIAs have been conducted annually. CONCLUSIONS: Afghanistan has made progress moving closer to eliminating polio. The program struggles to reach all children because of management and accountability problems in the field, inaccessible populations, and inadequate social mobilization. Consequently, too many children are missed during SIAs. Afghanistan adopted a national emergency action plan in 2012 to address these issues, but national elimination will require consistent and complete implementation of proven strategies.

Delay in the treatment of pulmonary tuberculosis: a report from Afghanistan.

OBJECTIVES: The aim of this study was to determine the length of delays and to investigate the factors associated with patient (care-seeking) and health-system (treatment initiation following care-seeking) delays, among smear-positive tuberculosis patients in Kunar province, Afghanistan, as delay in diagnosis and treatment results in more severe disease, higher mortality, and a longer period of infectivity in the community. METHODS: A cross-sectional study of 122 new smear-positive pulmonary tuberculosis patients, aged ≥15 years, registered at a hospital and a clinic in Kunar province, was conducted from September 2008 to February 2009 using a structured questionnaire interview. RESULTS: Among the 122 participants, the average patient, health-system, and total delays were 205.2, 150.7, and 356.0 days, respectively. Patient delay was independently associated with an increase in the household size, social stigma linked with tuberculosis (social consequences of having tuberculosis), chest pain, longer time to reach a private health-care facility, initial seeking of alternative services (self-treatment with herbs or drugs; obtaining of drugs from pharmacy or drug store; visiting traditional health provider; and visiting community health worker), and initial consultation with a private health-care facility (p < 0.05). The risk of health-system delays increased with multiple visits and with time to reach private health facilities (p < 0.05). The risk of health-system delays decreased as social stigma increased (p < 0.05). CONCLUSIONS: Delays in the initiation of tuberculosis treatment in Kunar province are daunting. Efforts to reduce delays must encourage early visits, reduce tuberculosis-associated stigma, encourage a public-private health-care mix, improve health-care providers' diagnostic capabilities, and encourage active case-finding with recording of symptoms and screening of contacts.