---
title: Surveillance keeps finding disease that routine care undercounts
description: Preprints from Zambia, Uganda and Canada show molecular, community and lab-based surveillance measuring burdens that clinic records alone would miss.
canonical: https://hangingcontext.com/stories/2026-11-01/surveillance-finds-what-clinics-miss/
last-updated: 2026-11-01
url: https://hangingcontext.com/stories/2026-11-01/surveillance-finds-what-clinics-miss/
published: 2026-11-01T00:57:14Z
edition: 2026-11-01T00
newsroom: health-biotech
beat: None
trust: confirmed
source_count: 3
cited_manifest_ids: ['1793485209073907606', '1793477003471987481', '1793475998376070505']
---

# Surveillance keeps finding disease that routine care undercounts

*Preprints from Zambia, Uganda and Canada show molecular, community and lab-based surveillance measuring burdens that clinic records alone would miss.*

Confirmed · 3 sources · Health & Biotech · Published 2026-11-01 00:57 UTC

## Key facts

- In a preprint, molecular surveillance at a Zambian children's hospital found a weighted shigellosis prevalence of 19.5% among children under five admitted with acute diarrhea. (self-reported) [cites: 1793485209073907606]
- In a preprint, the same Zambian study put shigellosis hospitalization incidence at 2.4 per 1,000 person-years. (self-reported) [cites: 1793485209073907606]
- In a preprint, a community study in rural Uganda found co-infection with P. falciparum and S. mansoni at 18.51%, peaking at age 13. (self-reported) [cites: 1793477003471987481]
- In a preprint, a modelled combined intervention of water treatment, hygiene and reduced freshwater contact was projected to cut co-infection prevalence by 32%. (self-reported) [cites: 1793477003471987481]
- In a preprint, 216,524 urinary isolates from Canadian long-term care residents showed E. coli 44% non-susceptible to fluoroquinolones and K. pneumoniae 56% non-susceptible to nitrofurantoin. (self-reported) [cites: 1793475998376070505]

## What surveillance found in Zambia

Three preprints on medRxiv, each built on surveillance data rather than routine clinic records alone, report disease burdens that ordinary case counts would understate. In Ndola, Zambia, surveillance of hospitalized children under five found a weighted prevalence of shigellosis of 19.5% in that group. [cites: 1793485209073907606]

The same preprint put the incidence of shigellosis hospitalization at 2.4 per 1,000 person-years, and reported that 33% of the children with shigellosis had used antibiotics or other medication before admission. [cites: 1793485209073907606]

The study population is hospitalized children under five in Ndola, so the figures describe that hospital population, not children in the community at large. A prevalence of 19.5% means roughly one in five hospitalized children under five in the study carried shigellosis, and an incidence of 2.4 per 1,000 person-years puts a population rate on the same burden. The third figure in the study, that 33% of the children with shigellosis had used antibiotics or other medication before admission, shows how much treatment already happens before a hospital test. [cites: 1793485209073907606]

> **From Synorb** — Run the cited Manifests yourself. Every claim in this paper points to a Manifest id. Get a Synorb Key and read the Manifests behind it. The 72 Hour Agent Demo key needs no email. It lasts 72 hours and can pull up to 25 Manifests. It includes 5 Beacons; all of them are starter Beacons. [Get a key](https://synorb.com/connect/start)


## Shared risks in rural Uganda

In rural Uganda, a community-based preprint study found co-infection prevalence of 18.51% for Plasmodium falciparum and Schistosoma mansoni, peaking at age 13. [cites: 1793477003471987481]

Distance to a government health centre was a primary shared determinant of risk for both infections. The study's model projected that a combined intervention of water treatment, hygiene and reduced freshwater contact would cut co-infection prevalence by 32%. [cites: 1793477003471987481]

A co-infection prevalence of 18.51% means nearly one in five people in the rural Ugandan study carried both parasites at once, and distance to a government health centre shaped risk for both infections together rather than for either one alone. [cites: 1793477003471987481]

## Resistance in Canadian care homes

In Canada, a preprint using the Public Health Agency of Canada's AMRNet programme analysed 216,524 urinary isolates from long-term care residents in five provinces between 2016 and 2024. The most common isolates were E. coli at 51%, K. pneumoniae at 14% and P. mirabilis at 12%. [cites: 1793475998376070505]

The resistance figures complicate treatment choices: E. coli isolates showed 44% non-susceptibility to fluoroquinolones, while K. pneumoniae showed 56% non-susceptibility to nitrofurantoin. [cites: 1793475998376070505]

The isolates span five provinces and the years 2016 to 2024, giving the baseline a multi-year, multi-province footing. With E. coli the most common isolate at 51% and 44% of those isolates non-susceptible to fluoroquinolones, a large share of the most frequent urinary isolates would not respond to that drug class, while 56% of K. pneumoniae isolates were non-susceptible to nitrofurantoin. [cites: 1793475998376070505]

## What this means for planners

Read together, the three preprints point in the same direction: where surveillance is molecular, community-based or lab-based, the measured burden is large enough to change planning, for paediatric diarrhoea, for combined parasite control, and for antibiotic choices in care homes. But each result is bounded by its own design: one hospital, one rural cohort, and one pilot surveillance programme. The numbers are a baseline for further work, not a final count, and all three studies await peer review. [cites: 1793485209073907606, 1793477003471987481, 1793475998376070505]

The common thread is measurement: each study counts disease in a population that routine records describe only partly, whether hospitalized children, a rural community, or care-home residents whose resistance patterns emerge only from laboratory data. [cites: 1793485209073907606, 1793477003471987481, 1793475998376070505]

## What is still unresolved

- Long-term clinical outcomes after discharge for the Zambian children, and antibiotic resistance profiles of the Shigella strains identified.
- Whether the modelled 32% co-infection reduction in Uganda holds up in clinical validation, and whether the ecological findings generalise beyond rural Uganda.
- How inconsistent jurisdiction participation across years affects the Canadian baseline, and how reliably long-term care patients can be identified in lab-based datasets.

## Decision card

- **Useful for:** Public-health planners weighing investment in molecular, community or lab-based surveillance; Teams setting baselines for paediatric diarrhoea, parasite control or care-home antibiotic stewardship
- **Not for:** Setting treatment guidelines from preprint results alone; Treating modelled intervention projections as observed outcomes
- **Compare against:** Routine clinic case counts for the same populations; Peer-reviewed surveillance results once these preprints are published

## Provenance ledger

| Manifest id | Title | Source | Claims used | Published |
|---|---|---|---|---|
| `1793485209073907606` | High Burden of Shigellosis Among Hospitalized Children under five in Ndola, Zambia: Evidence from molecular-based surveillance | [medrxiv-maternal-child-reproductive-health](https://medrxiv.org/content/10.64898/2026.10.29.26366813v1.full) | 1793485585721078597, 1793485585725314486, 1793485585727806115 | 10-31 00:00 |
| `1793477003471987481` | Identifying shared and parasite-specific determinants of Plasmodium falciparum and Schistosoma mansoni co-infection in a large-scale community-based study in rural Uganda | [medrxiv-infectious-disease-surveillance](https://medrxiv.org/content/10.64898/2026.10.29.26366722v1.full) | 1793477389140255410, 1793477389143286752, 1793477389141248695 | 10-31 00:00 |
| `1793475998376070505` | Antimicrobial resistance patterns among urinary isolates from long-term care residents in Canada: findings from an AMRNet pilot | [medrxiv-epidemiology-public-health](https://medrxiv.org/content/10.64898/2026.10.29.26366712v1.full) | 1793476543564736939, 1793476543566675226, 1793476543560304072, 1793476543563193922 | 10-31 00:00 |

## Run these Manifests yourself

Every Manifest cited here can be read in full with your own Synorb Key. Check the claims before you rely on them.

1. **Get a Synorb Key.** Click Generate Free Agent Key at https://synorb.com/connect/start, or let your agent make a key: MCP tool `synorb-get-demo-key` (no header needed), or REST `POST https://api.synorb.com/api/connect/demo-key` with a JSON body such as `{"client":"your-agent-name"}`. The key is the `api_key` field of the answer. Save the key. The 72 Hour Agent Demo key needs no email. It lasts 72 hours and can pull up to 25 Manifests. It includes 5 Beacons; all of them are starter Beacons.
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Cited Manifest ids:

- `1793485209073907606`
- `1793477003471987481`
- `1793475998376070505`

```sh
for id in 1793485209073907606 1793477003471987481 1793475998376070505; do
  curl -s -H "Authorization: Bearer $SYNORB_KEY" "https://api.synorb.com/manifests/by-id/$id"
done
```

> **From Synorb** — Connect your agent over MCP. Add https://mcp.synorb.com/mcp to your agent, then call the tool synorb-get-demo-key if it has no key yet. It needs no email and no form. Keys are free for 72 hours, and new keys are limited per network. [How to connect](https://synorb.com/connect/start)

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