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🚨New article: Disappearing people: A global demographic data crisis threatens public policy
🌍Call for partnerships with LIMCs to co-develop demographic data methods as COVID, loss of trust & funding cuts mean fewer people counted.
#Census #LMIC #CoDevelopment
🔗https://www.worldpop.org/blog/disappearing-people-the-future-of-public-policy-depends-on-co-development-in-demographic-data/

Photograph of census fieldwork with the National Institute of Statistics and Demography (INSTaD), Fieldwork, Abomey Calavi, Benin.

📹New video: Professor Andy Tatem speaking on 'Small area population estimation and mapping'

👨‍👨‍👧‍👦 #PopulationData
🗺️ #GeospatialData
📊 #PopulationEstimation
🏫 #CapacityBuilding
🤝 #CoDevelopment

https://www.worldpop.org/webinars/

Photograph of a young girl with a speech bubble reading: "Why do we need population data?"

🚨New research paper: Spatio-temporal patterns of #health service delivery and access to maternal, child, and outpatient healthcare in #Volta region, #Ghana

A new approach to monitoring service changes using #HealthData & #SpatialAnalysis - led by Dr Winfred Dotse-Gborgbortsi

🔗 https://doi.org/10.1080/16549716.2025.2513861

Map showing spatial distribution of health facility types and changes in services provided overlayed on 2022 population.

➡️ Our new high-resolution population & #vaccination maps show nearly 1 million West & Central African children unvaccinated.

🔗 https://www.worldpop.org/blog/despite-progress-nearly-1-million-children-in-west-africa-still-miss-out-on-life-saving-vaccines/

Reach the Unreached project - funded by #UNICEF - working with in-country stakeholders, #CartONG and #MapAction

🌍 #Cameroon #Chad #CotedIvoire #Guinea #Mali #ZeroDose

A regional map of West and Central Africa showing estimated diphtheria, tetanus, and pertussis (DTP) vaccine coverage rates in Cameroon, Chad, Côte d'Ivoire, Guinea, and Mali.

📣 Listen to Professor Andy Tatem to find out how WorldPop is changing lives and improving decision making in low- and middle-income countries in #TheWeSociety podcast from ‪@acadsocsciences.bsky.social‬ & #WillHutton

🔗https://www.worldpop.org/blog/the-we-society-population-data-destiny

🌍 #LMIC #SocialScience #Data4Good

Screen capture from Google Earth of Nairobi, Kenya

👉 See how our innovative #AI and cutting edge data methodologies help improve child vaccination coverage data

🔗 https://mapaction.org/abcs-of-reaching-the-unreached-how-mapping-roads-helped-to-get-life-saving-vaccines-to-children-in-africa/

Reach the Unreached project - funded by #UNICEF - working with in-country stakeholders, #CartONG and #MapAction

🌍 #Cameroon #Chad #CotedIvoire #Guinea #Mali

Listen to Professor Andy Tatem on #BBC Tech Life talk about how WorldPop use Google Open Building Data https://www.worldpop.org/blog/how-worldpop-uses-google-open-building-data/
#PopulationModelling #HealthInterventions #DisasterManagement #CensusPlanning #BBCSounds

Screen capture from Google Open Buildings

🚨 New research paper: Comparing and integrating human #mobility data sources for #measles transmission modeling in #Zambia https://doi.org/10.1371/journal.pgph.0003906

📊 Integrating multiple data sets improves validity of mobility estimates & dynamics of infectious disease transmission.

✒️ Co-authored by Prof Andrew Tatem, Dr Shengjie Lai and Qianwen Duan

Graphic image showing cumulative cases of measles with mobility between districts informed by a single data set (mobile phone, Facebook, or travel survey).

🌍 New preprint available on census-independent small area estimates of population & number of households in Cameroon: doi.org/10.12688/verixiv.933.1

🤝 Collab.with Institut National de la Statistique du Cameroun, Nnamdi Azikiwe University & University of Southampton, led by Dr Chibuzor Christopher Nnanatu. Supported by the Gates Foundation and the UK FCDO.

📂 Datasets: wopr.worldpop.org/?CMR/Population/v1.0

🖥️ R code: github.com/wpgp/Efficient-Population-Modelling-using-INLA-SPDE

Graphic images showing: A) Number of households and B) Population counts at 100 m-by-100 m spatial resolution; with inset maps focusing on the spatial distributions of number of people (population count) and the number of households in Douala and Yaoundé.

📣Beta test our new global #population #data - 2015 to 2030

⬇️Now freely available to download ⬇️

https://www.worldpop.org/blog/beta-test-our-new-global-population-data-2015-to-2030/

#HDX #HumanitarianData @ACLED @qgis @geomob @geonews

Drone photograph of busy market. Yaoundé, Cameroon.

Wed 30 Apr 13:00 CAT (UTC+2) join Senior Enterprise Fellow @heatherchamberlain.bsky.social speaking on how high resolution mapped #PopulationData support health programme planning

With the #Zambia #Climate Change #Sustainability & #Health Network
https://zambiaccsnetwork.wixsite.com/home/event-details-registration/high-resolution-mapped-population-data-how-can-this-be-used-to-support-health-programme-planning

Zoom 🔗 https://us02web.zoom.us/j/81601075758?pwd=YSiWCRuJ3JEMaqgfaam7Ybl0r0N3pI.1

A bustling African outdoor market scene set near railway tracks, featuring numerous vendors selling various goods. The area is populated with people browsing and purchasing items, while others transport goods. Colourful clothing and merchandise are displayed on makeshift tables alongside the tracks, with buildings and buses visible in the background. The sky is overcast.

🚨New research: Subnational variations in the quality of household survey data in sub-Saharan Africa

Easy-to-access geospatial estimates of survey data quality highlight the need to invest in better targeting of household surveys in remote areas.

Nature Communications 🔗 https://doi.org/10.1038/s41467-025-58776-5

Graphic showing a–i Proportion of reported ages ending in 5 or 0 of all adults between 23 and 62 (’age heaping’) at (a) 5 × 5 km grid-cell level; (b) district level (admin-2); (c) country level. Share of interviewed women (15–49 years) with either the year or month of birth missing relative to all interviewed women (’incomplete age’) at (d) 5 × 5 km grid-cell level; (e) district level (admin-2); (f) country level. Missing or biologically implausible values for the attained heights of children (height-for-age z-scores, HAZ) according to World Health Organization (WHO) standards (’flagged HAZ’) at (g) 5 × 5 km grid-cell level; (h) district level (admin-2); (i) country level. Countries in dark grey are not in the sample. Grid cells with fewer than 10 people per 1 × 1 km and classified as barren or sparsely vegetated or grid cells with population data not available are colored light grey.

🚨New study: Stratified sustainable vector control strategies & measures for #malaria control & elimination in #China

China’s 70 year endeavour to control vectors for malaria elimination nationwide.

#Health #VectorControl

In BMJ 🔗 https://doi.org/10.1136/bmj-2024-080656

Also: Lessons from failure to success on malaria elimination in the Huai River Basin in China

In BMJ https://doi.org/10.1136/bmj-2024-080658

Graphic showing geographic distribution of four major malaria Anopheles in mainland China between 2000 and 2016: An sinensis (A), An lesteri (B), An minimus (C), and An dirus (D).8 Red dots in map A indicate that insecticide resistance has been reported in An sinensis population (data from https://apps.who.int/malaria/maps/threats/). Stratified malaria endemic regions in 1979 (E) and 2010 (F). County type I=annual incidence >10/100 000, with indigenous cases reported in three consecutive years; type II= indigenous cases reported in past three years but annual incidence

🚨 New project: Machine learning for blue line tracing and wastewater surveillance

🚀We're partnering with @UVA_ID, @imperialmed.bsky.social @novelt_CH @icddr_b and WHO GIS Centre to create smarter, scalable ways to track infectious diseases in low and middle-income countries using #EnvironmentalData #SatelliteData

#Bangladesh 🇧🇩 #Dhaka
https://www.worldpop.org/current-projects/machine-learning-for-blue-line-tracing-and-wastewater-surveillance/

Photo of sanitation in Rohingya camp, by Rabiul Hasan / icddr,b

🚀 In preparation for the Somali census, we just wrapped up an intense 8-day "Training the Trainers" workshop! 🌍 The goal? To supercharge the geospatial skills of the Somalia National Bureau of Statistics and #UNFPA Somalia teams. This workshop will play a key role in enhancing the accuracy and efficiency of the upcoming census—critical work for shaping Somalia’s future! 💡

#GeospatialTech #CensusPreparation #SNBS #UNFPA #CapacityBuilding #SomaliCensus #preEA

https://www.worldpop.org/blog/building-census-readiness-geospatial-training-boosts-capacity-for-somali-statisticians/

New research on caesarean services in #Dakar

While most women are <5 min from services, 44.3% bypassed them. Improving health centre's quality & capacity is essential to reduce unnecessary bypassing and ensure timely access to essential obstetric services.

Paper led by Dr El Hadji Malick Sylla with WorldPop's Dr Winfred Dotse-Gborgbortsi.

#Africa #Senegal #WomensHealth
tinyurl.com/ypz8t9cx

Graphic showing expected flows (A) versus observed flows (B) in six health facilities surveyed (n=763) in Dakar, Senegal. CS, caesarean section.

Using satellite imagery and advanced spatial modelling we are collaborating with #UNHCR to innovate mapping of displaced populations and unlocking the power of registration data.

By WorldPop data scientist Edith Darin and others.

#refugees #geodata #mapping

https://medium.com/unhcr-innovation-service/smarter-refugee-surveys-for-a-more-effective-humanitarian-response-ceb9e83e1211

We're now on BlueSky! 🦋

👍 Follow us @worldpop-uos.bsky.social 💙

🔗 https://bsky.app/profile/worldpop-uos.bsky.social