Targeted literature review of the burden of extraintestinal pathogenic Escherichia Coli among elderly patients in Asia Pacific regions.

BACKGROUND: Extraintestinal Pathogenic Escherichia coli (ExPEC) is a leading cause of invasive disease, including bacteremia and sepsis. Invasive ExPEC disease (IED) has the potential to complicate the clinical treatment of other conditions and is associated with an increased mortality, hospitalization, and worse outcomes. Older adults and individuals with comorbid conditions are at higher risk of IED. ExPEC is of particular concern in the Asia Pacific region due to aging populations and rising antimicrobial resistance. OBJECTIVES: This study aimed to synthesize most recent data on the epidemiology, clinical and economic burden of IED in the elderly/high risk populations in China, Japan, South Korea, Taiwan, and Australia. METHODS: A targeted literature review was conducted using Embase, Medline, as well as local scientific databases. We included studies published in English and local languages published from January 1, 2010 to October 7, 2020 that were relevant to the research objectives. Studies were narratively synthesized. RESULTS: A total of 1,047 studies were identified and 34 of them were included in this review. ExPEC accounted for 46.0% (1,238/2,692) of bacteria-related invasive diseases in patients aged above 60 years in South Korea, followed by China (44.4% (284/640)), Taiwan (39.0% (1,244/3,194)), and Japan (18.1% (581/3,206)), while Australia reported ExPEC out of all pathogens (54.7% (4,006/7,330)) in general adults. Comorbidities such as diabetes or cancer were common in these patients. Studies reported increases in length-of-stay, and in-hospital 30-day all-cause mortality related to ExPEC associated bacteremia was between 9% to 12%. From a cost perspective, a 3-fold increase in sepsis-associated cost was reported in South Korea between 2005 and 2012. In Australia, antimicrobial resistance contributed to an additional cost of AUD $5.8 million per year (95% uncertainty interval [UI], $2.2-$11.2 million) in the treatment of bloodstream infections (BSIs). CONCLUSION: ExPEC was a major cause of blood stream infection across China, Japan, South Korea, Taiwan, and Australia. Both the clinical and economic burden associated to ExPEC infections as well as the antimicrobial resistance observed in the elderly call for preventive and curative actions in these regions.

Extraintestinal Pathogenic Escherichia coli (ExPEC) is a leading cause of invasive disease, including bacteremia and sepsis.A targeted literature review included the most recent data from 34 published studies on the epidemiology and clinical and economic burden of IED in the elderly/high risk populations in China, Japan, South Korea, Taiwan, and Australia.ExPEC accounted for 46.0% (1,238/2,692) of bacteria-related invasive diseases in patients aged above 60 years in South Korea, followed by China (44.4% (284/640)), Taiwan (39.0% (1,244/3,194)), and Japan (18.1% (581/3,206)), while Australia reported ExPEC out of all pathogens (54.7% (4,006/7,330)) in general adults. Studies reported increases in length-of-stay and in-hospital 30-day all-cause between 9% to 12%. These factors, along with antimicrobial resistance observed in the elderly, call for preventive and curative actions in these regions.Data for costs associated with ExPEC induced BSI or sepsis in this region are limited, but evidence shows increasing expenditures.

Impact of COVID-19 on routine immunisation in South-East Asia and Western Pacific: Disruptions and solutions.

BACKGROUND: Data on COVID-19-induced disruption to routine vaccinations in the South-East Asia and Western Pacific regions (SEAR/WPR) have been sparse. This study aimed to quantify the impact of COVID-19 on routine vaccinations by country, antigen, and sector (public or private), up to 1 June 2020, and to identify the reasons for disruption and possible solutions. METHODS: Sanofi Pasteur teams from 19 countries in SEAR/WPR completed a structured questionnaire reporting on COVID-19 disruptions for 13-19 routinely delivered antigens per country, based on sales data, government reports, and regular physician interactions. Data were analysed descriptively, disruption causes ranked, and solutions evaluated using a modified public health best practices framework. FINDINGS: 95% (18/19) of countries reported vaccination disruption. When stratified by country, a median of 91% (interquartile range 77-94) of antigens were impacted. Infancy and school-entry age vaccinations were most impacted. Both public and private sector healthcare providers experienced disruptions. Vaccination rates had not recovered for 39% of impacted antigens by 1 June 2020. Fear of infection, movement/travel restrictions, and limited healthcare access were the highest-ranked reasons for disruption. Highest-scoring solutions were separating vaccination groups from unwell patients, non-traditional vaccination venues, virtual engagement, and social media campaigns. Many of these solutions were under-utilised. INTERPRETATION: COVID-19-induced disruption of routine vaccination was more widespread than previously reported. Adaptable solutions were identified which could be implemented in SEAR/WPR and elsewhere. Governments and private providers need to act urgently to improve coverage rates and plan for future waves of the pandemic, to avoid a resurgence of vaccine-preventable diseases. FUNDING: Sanofi Pasteur.

Safety of a quadrivalent meningococcal conjugate vaccine in healthy subjects aged 9 months to 55 years in Vietnam.

PURPOSE: Meningococcal disease is a major global health concern due to its severe and sudden clinical manifestations, devastating long-term sequelae, and predominance in younger age groups. This study evaluated the safety of a quadrivalent meningococcal polysaccharide diphtheria toxoid conjugate vaccine (MenACWY-D; Menactra) in participants aged 9 months to 55 years in Vietnam. METHODS: This was an open-label, single-arm study conducted between June and December 2016. Participants received one 0.5-mL dose of the vaccine, and those aged 9 to 23 months received a second 0.5-mL dose 3 months later. Participants (or their parents or legal guardians) reported adverse events during the 28 days after each dose. RESULTS: The study included 112 participants aged 9 to 23 months and 112 participants aged 2 to 55 years. Of these 224 participants, 100 (44.6%) had one or more solicited reactions within 7 days following any MenACWY-D dose, mostly injection site pain, lost appetite (in 9 to 23-month-olds), and malaise (in 2 to 55-year-olds). Most solicited reactions were of mild or moderate intensity and resolved within 3 days. Five participants had unsolicited adverse reactions (ARs), two of which (tonsillitis and febrile convulsion), in 9 to 23-month-olds, were considered by the investigator as serious adverse events related to the vaccine. No immediate unsolicited ARs, severe unsolicited nonserious ARs, or unsolicited injection site reactions were reported, and both participants who experienced vaccine-related serious adverse events recovered. CONCLUSION: Consistent with studies in other countries, MenACWY-D had an acceptable safety profile in individuals from Vietnam aged 9 months to 55 years (WHO Universal Trial Number: U1111-1143-9207).

Cost-Effectiveness Analysis of Pneumococcal Vaccination with the Pneumococcal Polysaccharide NTHi Protein D Conjugate Vaccine in the Philippines.

OBJECTIVES: To compare the cost-effectiveness of a universal mass vaccination (UMV) program with a 2 + 1 schedule of a 10-valent pneumococcal polysaccharide nontypeable Haemophilus influenzae protein D conjugate vaccine (PHiD-CV) against two strategies: 1) a no-vaccination strategy and 2) a pneumococcal 13-valent conjugate vaccine (PCV13) 2 + 1 strategy in the Philippines. METHODS: A published Markov cohort model was adapted to simulate the epidemiological and economic burden of pneumococcal diseases (meningitis, bacteremia, pneumonia, and acute otitis media) within a projected birth cohort in 2012 of 1,812,137 newborns over lifetime. Analyses were conducted at an annual discount rate of 5% from the perspective of the Philippine government. The current evaluation was updated with the best available local/regional clinical epidemiological data and published efficacy evidence. RESULTS: Compared with the no-vaccination strategy, the PHiD-CV 2 + 1 UMV program was projected to prevent 3,343 deaths due to invasive pneumococcal diseases and pneumonia and 326,862 cases of pneumococcal diseases, resulting in an incremental cost-effectiveness ratio of 50,913 pesos/quality-adjusted life-year gained, which was considered to be highly cost-effective according to the threshold recommended by the World Health Organization. In comparison with the PCV13 2 + 1 strategy, the PHiD-CV 2 + 1 strategy was estimated to have a substantial reduction in acute otitis media (127,680 cases) and therefore a cost saving of potential 92.5 million pesos assuming price parity between PHiD-CV and PCV13 (US $1 = 42.13 pesos in 2012). CONCLUSIONS: The PHiD-CV 2 + 1 UMV program is projected to be cost-effective, compared with no vaccination, and would provide substantial savings with higher quality-adjusted life-year gains as compared with the PCV13 2 + 1 strategy in the context of the Philippines.

Cost-effectiveness analysis of universal mass vaccination with Rotarix® in the Philippines

@#<p style="text-align: justify;"><strong>BACKGROUND:</strong> Rotavirus is among the leading causes of severe gastroenteritis in children. Effective vaccines enable universal mass vaccination (UMV) which incurs high expenditure and therefore economic justification is needed.</p> <p style="text-align: justify;"><strong>OBJECTIVE: </strong>This study aimed to evaluate the cost-effectiveness of UMV with Rotarix ® versus no vaccination program in the Philippines.</p> <p style="text-align: justify;"><strong>METHODS: </strong>A four-state decision tree model was used to estimate costs and health outcomes subject to annual discount rate of 3.5% Local and international published data and experts opinions were used for epidemiology, efficacy and resource use input parameters. Analyses were reported as estimated total costs, quality adjusted life years (QALYs) gained, and incremental cost-effectiveness ratio (ICER) in Philippines Peso (PHP) per QALY gained between rotavirus UMV and no vaccination.</p> <p style="text-align: justify;"><strong>RESULTS: </strong>From a payer (societal) perspective, the ICER is PHP 12, 835/QALY (PHP12,059/QALY). Sensitivity analyses showed the ICERs below PHP 80,000/QALY, well below 1 time 2012 GDP per capita at PHP 103,366 with the main drivers of uncertainty being the probabilities of mild and moderate diarrhoea and vaccine costs</p> <p style="text-align: justify;"><strong>CONCLUSION: </strong>Rotavirus UMV reduces both health and economic burden of rotavirus induced gastroenteritis. Based on the WHO's recommended thresholds, Rotarix® vaccination is projected to be very cost-effective in the Philippines in comparison with no vaccination.</p>