Medicine and Health Sciences Commons^™

A Systematic Review Of Measures Of Healthcare Workers’ Vaccine Confidence, Kofoworola Akinsola, Ayobami Bakare, Elisa Gobbo, Carina King, Claudia Hanson, Adegoke Falade, Sibylle Herzig Van Wees

Centre of Excellence in Women and Child Health

Healthcare workers (HCW) perceptions toward vaccines influence patient and community vaccine decision making. In an era of rising vaccine hesitancy, understanding HCW vaccine confidence is critical. This systematic review aims to review instruments that have been validated to measure HCW vaccine confidence. We conducted a search in five databases in June 2023. Data was descriptively synthesized. Twelve articles describing 10 different tools were included. Most tools included dimensions or items on vaccine knowledge (n = 9), safety (n = 8), vaccine usefulness (n = 8), recommendation behavior (n = 8), and self-vaccination practice (n = 7). All, except one study, …

Women In Health And Their Economic, Equity And Livelihood Statuses During Emergency Preparedness And Response (Wheeler) Protocol: A Mixed Methods Study In Kenya., Evaline Chepchirchir Langat, Bilali Yusuf Mazoya, Pauline Oginga, Ferdinand Okwaro, Norah Matheka, Irene Kibara, Rhoda Otieno, Michaela Mantel, Robert Lorway, Marleen Temmerman

Centre of Excellence in Women and Child Health

Introduction: Kenya reported its first COVID-19 case on 13 March 2020. Pandemic-driven health system changes followed and unforeseen societal, economic and health effects reported. This protocol aims to describe the methods used to identify the gender equality and health equity gaps and possible disproportional health and socioeconomic impacts experienced by paid and unpaid (community health volunteer) female healthcare providers in Kilifi and Mombasa Counties, Kenya during the COVID-19 pandemic.

Methods and analysis: Participatory mixed methods framed by gender analysis and human-centred design will be used. Research implementation will follow four of the five phases of the human-centred design approach. Community …

Challenges And Opportunities For Improving Access To Adolescent And Youth Sexual And Reproductive Health Services And Information In The Coastal Counties Of Kenya: A Qualitative Study., Evaline Chepchirchir Langat, Abdu Mohiddin, Flaura Kidere, Anisa Omar, Job Akuno, Violet Naanyu, Marleen Temmerman

Centre of Excellence in Women and Child Health

Background: Globally, adolescents and youth experience high unmet need for sexual and reproductive health (SRH) information and services. In Kenya, evidence shows that more than half of teenage pregnancies are unintended and that half of all new HIV infections occur in people ages 15-24-year-olds, with the majority of those being female. The coastal counties in Kenya record a relatively high adolescent pregnancy rate and higher rates of unmet need for contraception for all women of reproductive age compared to the national average. This study focused on gaining a deeper understanding of the existing challenges to and opportunities for accessing SRH …

Editorial: Care During Pregnancy And Early Childhood For Growth And Development In Low- And Middle- Income Countries, Ranadip Chowdhury, Ravi Prakash Upadhyay, Bireshwar Sinha, Nita Bhandari, Sunita Taneja, Jai K. Das

Centre of Excellence in Women and Child Health

No abstract provided.

Exploring The Willingness Toward Hiv Immediate Test And Treat Among Msm In Nairobi And Its Environs: A Cross-Sectional Study., Kingori Ndungu, Peter Gichanga, Marleen Temmerman

Centre of Excellence in Women and Child Health

Background: In the test and treat initiative, high-risk populations are screened for human immunodeficiency virus (HIV) infection and start early treatment if diagnosed positive. This study explores factors associated with willingness to initiate testing and immediate treatment among men who have sex with men (MSM) in Nairobi and its environs. The study was informed by a conceptual framework combining the AIDS Risk Reduction Model (ARRM) and the Modified Social Ecological Model.

Methods: This cross-sectional exploratory study targeted MSM (aged 18–60 years) reporting active engagement in anal or oral sex with men in Nairobi and its surrounding areas. Purposive sampling was …

The Alignmnh 2023 Conference: Progress In Raising Parents’ Voices In Stillbirth Advocacy., Grace Mwashigadi, Treasure Lwantale, Aleena Wojcieszek, Hannah Blencowe, Susannah Hopkins Leisher, Caroline Wanjiru Kiunga, David Wanjala, Claire Storey

Centre of Excellence in Women and Child Health

No abstract provided.

Pattern And Determinants Of Contraceptive Use Among The Muslim Women In Wajir And Lamu Counties In Kenya: A Cross-Sectional Study., Batula Abdi, Jerry Okal, Gamal Serour, Vincent Were, Marleen Temmerman, Peter Gichangi

Centre of Excellence in Women and Child Health

Background; Improving access to family planning (FP) is associated with positive health benefits that includes averting nearly a third of all maternal deaths and 10% of childhood deaths. Kenya has made great strides in improving access to family planning services. However, amid this considerable progress, regional variation has been noted which begs the need for a clearer understanding of the the patterns and determinants that drive these inconsistencies.

Methods; We conducted a cross-sectional study that involved 663 Muslim women of reproductive age (15–49 years) from Wajir and Lamu counties in Kenya between March and October 2018.The objective of this study …

Inequalities In Use Of Hospitals For Childbirth Among Rural Women In Sub-Saharan Africa: A Comparative Analysis Of 18 Countries Using Demographic And Health Survey Data., Manuela Straneo, Claudia Hanson, Thomas Van Den Akker, Bosede Afolabi, Anteneh Asefa, Alexandre Delamou, Mardieh Dennis, Luis Gadama, Nyika Mahachi, Welcome Mlilo

Centre of Excellence in Women and Child Health

Introduction; Rising facility births in sub-Saharan Africa (SSA) mask inequalities in higher-level emergency care— typically in hospitals. Limited research has addressed hospital use in women at risk of or with complications, such as high parity, linked to poverty and rurality, for whom hospital care is essential. We aimed to address this gap, by comparatively assessing hospital use in rural SSA by wealth and parity.

Methods; Countries in SSA with a Demographic and Health Survey since 2015 were included. We assessed rural hospital childbirth stratifying by wealth (wealthier/poorer) and parity (nulliparity/high parity≥5), and their combination. We computed percentages, 95% CIs and …

Determinants Of Immunization In Polio Super High-Risk Union Councils Of Pakistan, Ahmad Khan, Imtiaz Hussain, Dale A. Rhoda, Muhammad Umer, Uzair Ansari, Imran Ahmed, Caitlin Clary, Rana Muhammad Safdar, Sajid Bashir Soofi

Centre of Excellence in Women and Child Health

Background: The current polio epidemiology in Pakistan poses a unique challenge for global eradication as the country is affected by ongoing endemic poliovirus transmission. Across the country, 40 union councils (UCs) which serve as core reservoirs for poliovirus with continuous incidences of polio cases are categorized as super-high-risk union councils (SHRUCs).
Methodology: A cross-sectional survey was conducted in 39 SHRUCs using a two-stage stratified cluster sampling technique. 6,976 children aged 12-23 months were covered. A structured questionnaire was used for data collection. Data were analyzed using STATA version 17.
Results: Based on both vaccination records and recall, 48.3% of children …

Unravelling The Potential Mortality Benefits Of Mass Drug Administration With Azithromycin In Niger, Zulfiqar Ahmed Bhutta

Centre of Excellence in Women and Child Health

No abstract provided.

Sars-Cov-2 Seroprevalence In Pregnant Women In Kilifi, Kenya From March 2020 To March 2022, Angela Koech, Geoffrey Omuse, Alex Mugo, Isaac Mwaniki, Joseph Mutunga, Moses Mukhanya, Onesmus Wanje, Grace Mwashigadi, Geoffrey Katana, Marleen Temmerman

Centre of Excellence in Women and Child Health

Background: Seroprevalence studies are an alternative approach to estimating the extent of transmission of SARS-CoV-2 and the evolution of the pandemic in different geographical settings. We aimed to determine the SARS-CoV-2 seroprevalence from March 2020 to March 2022 in a rural and urban setting in Kilifi County, Kenya.

Methods: We obtained representative random samples of stored serum from a pregnancy cohort study for the period March 2020 to March 2022 and tested for antibodies against the spike protein using a qualitative SARS-CoV-2 ELISA kit (Wantai, total antibodies). All positive samples were retested for anti-SARS-CoV-2 anti-nucleocapsid antibodies (Euroimmun, ELISA kits, NCP, …

Psychometric Properties Of The Sindhi Version Of The Mood And Feelings Questionnaire (Mfq) In A Sample Of Early Adolescents Living In Rural Pakistan, Janavi Shetty, Florence Perquier, Susan C. Campisi, Yaqub Wasan, Madison Aitken, Daphne J. Korczak, Suneeta Monga, Sajid Bashir Soofi, Peter Szatmari, Zulfiqar Ahmed Bhutta

Centre of Excellence in Women and Child Health

There is a need for reliable and valid screening tools that assess depressive symptoms in adolescents in Pakistan. To address this need, the present study examined the psychometric properties and factor structure of a Sindhi-translated and adapted version of the child-report Mood and Feelings Questionnaire (MFQ-C) and the Short Mood and Feelings Questionnaire (SMFQ-C) in a community sample of adolescents living in Matiari, Pakistan. Questionnaires were translated into Sindhi and administered by study psychologists to 1350 participants (52.3% female) 9.0 to 15.9 years old. Measurement structure was examined using confirmatory factor analysis. Internal consistency was estimated, and convergent and divergent …

Intimate-Partner Violence And Its Association With Symptoms Of Depression, Perceived Health, And Quality Of Life In The Himalayan Mountain Villages Of Gilgit Baltistan, Gul Nowshad, Neelum Jahan, Nasim Zahid Shah, Nasloon Ali, Tazeen Saeed Ali, Sartaj Alam, Ambreen Khan, Mohammad Afzal Mahmood, Malika Saba, Syed M. Shah

Centre of Excellence in Women and Child Health

Study objectives: We aimed to estimate the prevalence of intimate partner violence (IPV) and associated risk factors in married women in rural villages of Gilgit Baltistan in Pakistan.
Methods: A cross-sectional design to assess the magnitude and factors associated with IPV in a random sample of 789 married women aged 18-49 years. A World Health Organization screening instrument was used to assess the presence of IPV in the previous 12 months. A locally validated instrument was adopted to identify self-reported symptoms of major depression according to the DSM IV. Trained nurses obtained socio-demographic and reproductive history through structured interviews. Bivariate …

Effects Of Integrating Family Planning With Maternal, Newborn, And Child Health Services On Uptake Of Voluntary Modern Contraceptive Methods In Rural Pakistan: Protocol For A Quasi-Experimental Study, Zahid Memon, Sophie Reale, Wardah Ahmed, Rachael Spencer, Talib Hussain Lashari, Zulfiqar Ahmed Bhutta, Hora Soltani

Centre of Excellence in Women and Child Health

Background: The uptake of modern contraceptive methods (MCMs) remains low, with 25% of women reporting their use in Pakistan. The overarching interventions covering service delivery platforms at facility and community levels necessitate the integration of family planning (FP) with maternal, newborn, and child health (MNCH) services.
Objective: The main aim of this study is to evaluate the impact of an integrated FP-MNCH service delivery model to increase coverage of MCMs in rural Pakistan. Moreover, we aim to measure the level of effectiveness of interventions regarding the uptake of MCMs.
Methods: A quasi-experimental, sequential, mixed methods study design with pre- and …

Combined Clinical Audits And Low-Dose, High-Frequency, In-Service Training Of Health Care Providers And Community Health Workers To Improve Maternal And Newborn Health In Mali: Protocol For A Pragmatic Cluster Randomized Trial, David Zombre, Jean-Luc Kortenaar, Farhana Zareef, Moussa Doumbia, Sekou Doumbia, Fadima Haidara, Katie Mclaughlin, Samba Sow, Zulfiqar Ahmed Bhutta, Diego G. Bassani

Centre of Excellence in Women and Child Health

Background: Although most births in Mali occur in health facilities, a substantial number of newborns still die during delivery and within the first 7 days of life, mainly because of existing training deficiencies and the challenges of maintaining intrapartum and postpartum care skills.
Objective: This trial aims to assess the effectiveness and cost-effectiveness of an intervention combining clinical audits and low-dose, high-frequency (LDHF) in-service training of health care providers and community health workers to reduce perinatal mortality.
Methods: The study is a three-arm cluster randomized controlled trial in the Koulikoro region in Mali. The units of randomization are each of …

Micronutrient Supplements Can Promote Disruptive Protozoan And Fungal Communities In The Developing Infant Gut, Ana Popovic, Celine Bourdon, Pauline W. Wang, David S. Guttman, Sajid Bashir Soofi, Zulfiqar Ahmed Bhutta, Robert H J. Bandsma, John Parkinson, Lisa G. Pell

Centre of Excellence in Women and Child Health

Supplementation with micronutrients, including vitamins, iron and zinc, is a key strategy to alleviate child malnutrition. However, association of gastrointestinal disorders with iron has led to ongoing debate over their administration. To better understand their impact on gut microbiota, we analyse the bacterial, protozoal, fungal and helminth communities of stool samples collected from a subset of 80 children at 12 and 24 months of age, previously enrolled into a large cluster randomized controlled trial of micronutrient supplementation in Pakistan (ClinicalTrials.gov identifier NCT00705445). We show that while bacterial diversity is reduced in supplemented children, vitamins and iron (as well as …

The Family Planning "Know-Do" Gap Among Married Women Of Reproductive Age In Urban Pakistan, S Yameen, Sidrah Nausheen, I Hussain, K Hackett, Arjumand Rizvi, Uzair Ansari, Zohra S. Lassi, D Canning, I Shah, Sajid Bashir Soofi

Centre of Excellence in Women and Child Health

Objective: To examine the prevalence and predictors of family planning (FP) know-do gaps among married women of reproductive age (MWRA) in low socio-economic urban areas of Karachi, Pakistan.
Design: This was a cross-sectional survey of randomly selected 7288 MWRA (16-49 years) to identify predictors of the know-do gap in FP using a logistic regression model.
Results: More than one third (35.5%) of MWRA had FP know-do gap, i.e., despite having a knowledge of contraceptives and desire to limit or delay childbearing, they were not using contraceptives. Women were less likely to use FP if they were getting older (25-35 years: …

Causes And Circumstances Of Maternal Death: A Secondary Analysis Of The Community-Level Interventions For Pre-Eclampsia (Clip) Trials Cohort, Annet M. Aukes, Kristina Arion, Jeffrey N. Bone, Jing Li, Marianne Vidler, Mrutyunjaya B. Bellad, Zahra Hoodbhoy, Rahat Qureshi, Sana Sheikh, Zulfiqar Ahmed Bhutta

Centre of Excellence in Women and Child Health

Background: Incomplete vital registration systems mean that causes of death during pregnancy and childbirth are poorly understood in low-income and middle-income countries. To inform global efforts to reduce maternal mortality, we compared physician review and computerised analysis of verbal autopsies (interpreting verbal autopsies [InterVA] software), to understand their agreement on maternal cause of death and circumstances of mortality categories (COMCATs) in the Community-Level Interventions for Pre-eclampsia (CLIP) cluster randomised trials.
Methods: The CLIP trials took place in India, Pakistan, and Mozambique, enrolling pregnant women aged 12-49 years between Nov 1, 2014, and Feb 28, 2017. 69 330 pregnant women were …

Dietary Diversity And Social Determinants Of Nutrition Among Late Adolescent Girls In Rural Pakistan, Jo-Anna B. Baxter, Yaqub Wasan, Muhammad Islam, Simon Cousens, Sajid Bashir Soofi, Imran Ahmed, Daniel W. Sellen, Zulfiqar Ahmed Bhutta

Centre of Excellence in Women and Child Health

The conditions in which adolescent girls mature shape their health, development and nutrition. Nutrient requirements increase to support growth during adolescence, but gaps between consumption and requirements exist in low- and middle-income countries. We aimed to identify and quantify the relationship between dietary intake and diverse social determinants of nutrition (SDN) among a subset of adolescent girls 15-18.9 years (n = 390) enrolled within the Matiari emPowerment and Preconception Supplementation (MaPPS) Trial. The primary outcome, dietary diversity score (DDS), was derived by applying the Minimum Dietary Diversity for Women 10-item scale to 24-h dietary recall data collected three times per …

Balancing Science And Public Policy In Pakistan's Covid-19 Response, Zulfiqar Ahmed Bhutta, Faisal Sultan, Aamer Ikram, Adil H. Haider, Assad Hafeez, Muhammad Islam

Centre of Excellence in Women and Child Health

Background: Coronavirus disease 2019 (COVID-19) has affected the world in an unprecedented manner and South Asian countries were among the first to experience imported cases. Pakistan's response to COVID-19 has been under scrutiny for its granularity, reach and impact.
Aims: to evaluate objectively the chronology and depth of the response to COVID-19 in Pakistan.
Methods: We evaluated available national and subnational epidemiological and burden information on COVID-19 cases and deaths in Pakistan, including projection models available to the Government at an early stage of the pandemic.
Results: Pakistan, with a population of 215 million and considerable geographic diversity, experienced case …

Anemia Among Women Of Reproductive Age: An Overview Of Global Burden, Trends, Determinants, And Drivers Of Progress In Low- And Middle-Income Countries, Aatekah Owais, Catherine Merritt, Christopher Lee, Zulfiqar Ahmed Bhutta

Centre of Excellence in Women and Child Health

Relatively little progress has been made in reducing anemia prevalence among women of reproductive age (WRA anemia). Interventions, policies and programs aimed at reducing WRA anemia have the potential to improve overall not only women's, but also children's health and nutrition outcomes. To our knowledge, this is the first review that aimed to compile evidence on the determinants and drivers of WRA anemia reduction in low- and middle-income countries (LMICs). We synthesized the available evidence on the determinants and drivers, including government policies and programs, of WRA anemia and their mitigation strategies across a wide range of countries and geographies, …

Psychological Impact Of Covid-19 And Lock Down Measures: An Online Cross-Sectional Multicounty Study On Asian University Students, Karuthan Chinna, Sheela Sundarasen, Heba Bakr Khoshaim, Kamilah Kamaludin, Mohammad Nurunnabi, Gul Mohammad Baloch, Syed Far Abid Hossain, Areej Sukayt, Nevi Dalina, Zahid Memon

Centre of Excellence in Women and Child Health

The COVID-19 pandemic and the lockdown measures have taken a toll on every level of the society, worldwide. This study examines their psychological impact on university students in Asia. A cross-sectional online survey was conducted between April and May 2020 in Malaysia, Saudi Arabia, Pakistan, Bangladesh, China, India and Indonesia. The Zung's self-rating anxiety scale (SAS) and questions on adaptive and maladaptive coping strategies were used in this study. A total of 3,679 students from the seven countries participated in this study. Overall, 21.9% and 13.7% of the students in this study experienced mild to moderate and severe to extreme …

Blood Pressure Thresholds In Pregnancy For Identifying Maternal And Infant Risk: A Secondary Analysis Of Community-Level Interventions For Pre-Eclampsia (Clip) Trial Data, Jeffrey N. Bone, Laura A. Magee, Joel Singer, Hannah Nathan, Rahat Qureshi, Charfudin Sacoor, Esperança Sevene, Andrew Shennan, Mrutyunjaya B. Bellad, Zulfiqar Ahmed Bhutta

Centre of Excellence in Women and Child Health

Background: Blood pressure measurement is a marker of antenatal care quality. In well resourced settings, lower blood pressure cutoffs for hypertension are associated with adverse pregnancy outcomes. We aimed to study the associations between blood pressure thresholds and adverse outcomes and the diagnostic test properties of these blood pressure cutoffs in low-resource settings.
Methods: We did a secondary analysis of data from 22 intervention clusters in the Community-Level Interventions for Pre-eclampsia (CLIP) cluster randomised trials (NCT01911494) in India (n=6), Mozambique (n=6), and Pakistan (n=10). We included pregnant women aged 15-49 years (12-49 years in Mozambique), identified in their …

Predicting The Environmental Suitability For Onchocerciasis In Africa As An Aid To Elimination Planning, Elizabeth A. Cromwell, Joshua C P. Osborne, Thomas R. Unnasch, Maria-Gloria Basáñez, Katherine M. Gass, Kira A. Barbre, Elex Hill, Kimberly B. Johnson, Katie M. Donkers, Zulfiqar Ahmed Bhutta

Centre of Excellence in Women and Child Health

Recent evidence suggests that, in some foci, elimination of onchocerciasis from Africa may be feasible with mass drug administration (MDA) of ivermectin. To achieve continental elimination of transmission, mapping surveys will need to be conducted across all implementation units (IUs) for which endemicity status is currently unknown. Using boosted regression tree models with optimised hyperparameter selection, we estimated environmental suitability for onchocerciasis at the 5 × 5-km resolution across Africa. In order to classify IUs that include locations that are environmentally suitable, we used receiver operating characteristic (ROC) analysis to identify an optimal threshold for suitability concordant with locations where …

Contextual Challenges In The Implementation Of The Alliance For Maternal And Newborn Health Improvement, Prospective Cohort Study, An Experience From Rural Pakistan, Yaqub Wasan, Shabina Ariff, Amjad Hussain, Sheraz Ahmed, Mansoor A. Abro, Imran Ahmed, Atif Habib, Sajid Bashir Soofi

Centre of Excellence in Women and Child Health

Introduction: Improving maternal and newborn survival needs robust data on patterns of morbidity and mortality from well-characterized cohorts. It is equally important for researchers to document and understand the contextual challenges of data collection and how they are addressed.
Methods: This was a prospective cohort study implemented from December 2012 to August 2014 in Matiari, Pakistan. A total of 11,315 pregnancies were enrolled. Participants were approached at home for sequential data collection through the standard pretested structured questionnaires. Some indicators were sourced through health facility records. Information on field challenges gathered through field diaries and minutes of meetings with field …

Randomised Trials At The Level Of The Individual, Jay J H. Park, Nathan Ford, Denis Xavier, Per Ashorn, Rebecca F. Grais, Zulfiqar Ahmed Bhutta, Herman Goossens, Kristian Thorlund, Maria Eugenia Socias, Edward J. Mills

Centre of Excellence in Women and Child Health

In global health research, short-term, small-scale clinical trials with fixed, two-arm trial designs that generally do not allow for major changes throughout the trial are the most common study design. Building on the introductory paper of this Series, this paper discusses data-driven approaches to clinical trial research across several adaptive trial designs, as well as the master protocol framework that can help to harmonise clinical trial research efforts in global health research. We provide a general framework for more efficient trial research, and we discuss the importance of considering different study designs in the planning stage with statistical simulations. We …

The International Perinatal Outcomes In The Pandemic (Ipop) Study: Protocol, Sarah J. Stock, Helga Zoega, Meredith Brockway, Rachel H. Mulholland, Jessica E. Miller, Jasper V. Been, Rachael Wood, Ishaya I. Abok, Belal Alshaikh, Zulfiqar Ahmed Bhutta

Centre of Excellence in Women and Child Health

Preterm birth is the leading cause of infant death worldwide, but the causes of preterm birth are largely unknown. During the early COVID-19 lockdowns, dramatic reductions in preterm birth were reported; however, these trends may be offset by increases in stillbirth rates. It is important to study these trends globally as the pandemic continues, and to understand the underlying cause(s). Lockdowns have dramatically impacted maternal workload, access to healthcare, hygiene practices, and air pollution - all of which could impact perinatal outcomes and might affect pregnant women differently in different regions of the world. In the international Perinatal Outcomes in …

Delivering Maternal And Neonatal Health Interventions In Conflict Settings: A Systematic Review, Mariella Munyuzangabo, Michelle F. Gaffey, Dina S. Khalifa, Daina Als, Anushka Ataullahjan, Mahdis Kamali, Reena P. Jain, Sarah Meteke, Amruta Radhakrishnan, Shailja Shah, Fahad J. Siddiqui, Zulfiqar Ahmed Bhutta

Centre of Excellence in Women and Child Health

Background: While much progress was made throughout the Millennium Development Goals era in reducing maternal and neonatal mortality, both remain unacceptably high, especially in areas affected by humanitarian crises. While valuable guidance on interventions to improve maternal and neonatal health in both non-crisis and crisis settings exists, guidance on how best to deliver these interventions in crisis settings, and especially in conflict settings, is still limited. This systematic review aimed to synthesise the available literature on the delivery on maternal and neonatal health interventions in conflict settings.
Methods: We searched MEDLINE, Embase, CINAHL and PsycINFO databases using terms related to …

Enteric Fever: A Slow Response To An Old Plague, Carlos Franco- Paredes, M. Imran Khan, Esteban Gonzalez- Diaz, Jose I. Santos- Preciado, Alfonso J. Rodriguez Morales, Eduardo Gotuzzo

Centre of Excellence in Women and Child Health

Man is irremediably embedded in nature with complex interactions with all living organisms. Historically, the establishment of contemporary human societies has been influenced by our coexistence with other microorganisms living in highly interconnected habitats and ecologies. As a result, with the progression from unicellular to multicellular life, bacteria have coexisted with humans. In this biological journey, while there are important benefits provided by bacterial guests to the human host living in complex relationships and becoming part of their microbiome, some organisms are able to cause a wide spectrum of diseases. Among the large Enterobacteriaceae family, the genus Salmonella, a …

Status Of Paratyphoid Fever Vaccine Research And Development, Laura B. Martin, Raphael Simon, Calman A. Maclennan, Sharon M. Tennant, Sushant Sahastrabuddhe, M. Imran Khan

Centre of Excellence in Women and Child Health

Salmonella enterica serovars Typhi and Paratyphi (S. Paratyphi) A and B cause enteric fever in humans. Of the paratyphoid group, S. Paratyphi A is the most common serovar. In 2000, there were an estimated 5.4 million cases of S. Paratyphi A worldwide. More recently paratyphoid fever has accounted for an increasing fraction of all cases of enteric fever. Although vaccines for typhoid fever have been developed and in use for decades, vaccines for paratyphoid fever have not yet been licensed. Several S. Paratyphi A vaccines, however, are in development and based on either whole cell …