Pan American Health Organization · Version 2
PAHO guidance on expanding health system capacity through tiered response and emergency medical teams during COVID-19 surges.
- Issuer
- Pan American Health Organization
- Edition
- Version 2
- Audience
- National health authorities, hospital administrators, emergency medical services, emergency medical teams
- Evidence
- Expert consensus based on early COVID-19 cohort data
- Reviewed
- 21 Oct 2026 · GMJ
What this guideline says
GMJ summary
This preliminary PAHO document provides a framework for countries to expand health system capacity during COVID-19 surges through three-tiered response strategies. Based on cohort data showing 40% of patients have mild disease, 40% moderate requiring hospitalisation, 15% severe requiring oxygen, and 5% critical requiring mechanical ventilation, the guidance addresses the rapid case doubling observed every 3 days in some countries.
The document outlines four epidemiological scenarios (C1–C4) from no cases to community transmission, with corresponding response strategies. It describes six types of emergency medical teams (EMTs) ranging from Type 1 mobile outpatient units to high-capacity mobile hospitals (HCMC) with 180-bed modular configurations. The three-tiered surge capacity approach progresses from strengthening existing facilities (Tier 1), optimising network resources and interhospital transfers (Tier 2), to establishing alternative care sites in hotels, stadiums and large enclosed spaces (Tier 3).
The guidance emphasises that additional beds are meaningless without adequate staffing and supplies, urging focus on patient care capacity rather than bed numbers alone. It provides detailed criteria for selecting alternative sites, expanding pre-hospital emergency medical services, and establishing medical coordination cells for information management across the health network.
Key points
For clinicians — doses and thresholds as stated in the guideline
- 40% of COVID-19 patients have mild disease requiring symptomatic treatment only; 40% moderate disease potentially requiring hospitalisation; 15% severe requiring oxygen therapy; 5% critical requiring mechanical ventilation
- Cases may double every 3 days during surges, creating urgent need for capacity expansion to prevent health system collapse
- Tier 1 response: establish pre-triage areas at hospital entrances, strengthen primary care for the 80% of patients manageable on an outpatient basis
- Tier 2 response: deploy EMTs specialising in severe acute respiratory infections (SARI) capable of caring for 30 critical COVID-19 patients; establish medical coordination cell for interhospital transfers and bed availability tracking
- Tier 3 response: establish alternative sites (medicalised hotels for mild/moderate cases; stadiums for high-capacity mobile hospitals with 180-bed modules: 160 moderate/severe and 20 critical)
- EMT Type 3 teams deploy facilities with minimum 40 hospital beds, 4 ICU beds, laboratory, radiology and two operating rooms convertible to ICUs
- Pre-hospital EMS should maximise transport capacity by deploying no more than 2 professionals per ambulance vehicle
- Alternative care sites must be located near hospitals to facilitate patient transfer and share laboratory/diagnostic resources
Epidemiological scenarios and health service response requirements (C1–C4)
Table extracted from the guideline
| Scenario | Description | Health service response |
|---|---|---|
| C1: No cases | No cases detected | Maintain routine organisation with early detection and infection control measures; EMS call protocol and ambulances for transfer; no changes in personnel/supplies |
| C2: Sporadic cases | Individual cases, no clustering | Dedicated areas for COVID-19 including pre-triage; EMS medical referral system; possibility of staff quarantine; local supply chain activated |
| C3: Cluster | Localised transmission | Hospitals in cluster area have response team for triage and referral at entrance; entire facility or sections devoted to COVID-19 patients with no mixed management; need for staff to cover shortages; national supply chain activated |
| C4: Community transmission | Widespread transmission | Reorganisation of health services network; expansion of hospital capacity for severe/critical cases requiring oxygen and critical care; deploy emergency medical teams and authorise alternative care sites; substantial staff increase and contingency plans for critical equipment |
Source: Pan American Health Organization, Recommendations for medical surge capacity and deployment of emergency medical teams. Reproduced in summary form.
From the guideline
Verbatim
“It is therefore important to focus expansion planning on increasing the capacity for patient care rather than increasing the number of beds without having adequate staffing and self-sufficiency to make care and operations feasible.”
Editor’s perspective
Why this matters for Georgia and the region
Prof. Giorgi Pkhakadze, MD, MPH, PhD
Editor-in-Chief, Georgian Medical Journal · Chair, Public Health Institute of Georgia · WHO consultant, health and migration
As someone who has advised on health system resilience in the South Caucasus, I recognise this PAHO framework as directly applicable to our region's epidemic preparedness beyond COVID-19. The emphasis on medical coordination cells with real-time bed tracking addresses a critical gap I have observed in Georgia: during surges, interhospital communication breaks down and ambulances circle between facilities seeking available ICU beds. The recommendation I would stress to Georgian clinicians is the 80/40/15/5 severity distribution—understanding that 80% of patients can be managed outpatient means we must resist the cultural tendency towards hospital admission and instead strengthen primary care triage and home monitoring systems. The realistic implementation caveat is that Georgia's alternative site strategy must account for our limited pool of critical care nurses: even if we convert the Tbilisi Sports Palace into a 200-bed facility, staffing those beds with personnel trained in mechanical ventilation and prone positioning will require months of accelerated training programmes, not weeks.
ORCID 0000-0001-7609-4515 · Perspective written for the GMJ Guidelines Library, 21 Oct 2026
Applicability
Georgia and the South Caucasus
For Georgia and the South Caucasus, this guidance provides a scalable framework applicable beyond COVID-19 to any respiratory epidemic causing rapid surge in severe cases. The three-tiered approach is particularly relevant for countries with geographically concentrated tertiary care capacity: Georgian health planners would need to map bed availability across public (including military), private and sanatorium facilities, establish regional medical coordination cells with real-time bed tracking systems, and pre-identify alternative sites (conference centres, closed sanatoria, military facilities) near major hospitals in Tbilisi, Batumi and Kutaisi. The emphasis on strengthening primary care for mild case management aligns with Georgia’s ongoing primary health care reforms, whilst the recommendation to reserve ambulance capacity for severe cases addresses the challenge of limited pre-hospital transport in mountainous regions.
Questions this guideline answers
Quick answers
When should alternative care sites like stadiums be activated?
Alternative care sites using stadiums or large enclosed spaces should be considered the last resort, activated only after all other resources have been exhausted—including reorganising health services and deploying EMTs Types 1 and 2 and SARI-specialised teams. The document emphasises that additional beds are useless without sufficient staff and supplies to make care feasible.
What are the minimum requirements for an alternative care site?
Essential requirements include: location near hospitals to facilitate patient transfer and share laboratory/diagnostic resources; adequate electricity, ventilation, heating, air conditioning, water and plumbing; capacity to separate patients; sufficient bathrooms and showers for patients and staff; adequate ambulance access with parking and loading ramps; secure entrances/exits; space for command centre; and separate cadaver storage area.
How can pre-hospital emergency medical services expand capacity during surges?
EMS can expand capacity by: deploying maximum 2 professionals per ambulance; using fast vehicles (fly cars/motorbikes) with single personnel to assess patients before sending ambulances; including drivers with basic training to free EMS personnel for patient care; limiting multiple-respondent strategies; referring mild cases to non-hospital locations; and establishing a centralised system to coordinate patient transport across the network.
What is the difference between EMT types for COVID-19 response?
EMT Type 1 provides triage, outpatient care and referral (fixed or mobile); Type 2 has minimum 20 inpatient beds for non-COVID patients; Type 3 has minimum 40 beds and 4 ICU beds convertible for COVID treatment; SARI-specialised EMTs care for 30 critical COVID patients; and high-capacity mobile hospitals (HCMC) deploy 180-bed modules (160 moderate/severe, 20 critical) in containers or temporary structures at alternative sites.
Related on GMJ
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- Issuer
- Pan American Health Organization
- Type
- Procedures, manuals, guidelines
- Edition
- Version 2
- Status
- Current
- Published
- 2020-01-01
- Scope
- Medical surge capacity planning, emergency medical team deployment, alternative care sites
- Audience
- National health authorities, hospital administrators, emergency medical services, emergency medical teams
- Licence
- CC BY-NC-SA 3.0 IGO
- Evidence
- Expert consensus based on early COVID-19 cohort data
- Record history
- Created 21 Oct 2026 · updated 21 Oct 2026 · next check Apr 2027
Pan American Health Organization. Recommendations for medical surge capacity and deployment of emergency medical teams. Preliminary Document, Version 2 (31 March 2020). Washington, D.C.: PAHO; 2020.GMJ Guidelines Library records are original summaries written by the GMJ editorial team from the issuer’s published document and reviewed by a physician. They do not replace the full guideline. The document is the copyright of its issuer and is linked, not hosted. Spotted an error or a newer edition? Tell the Guidelines Desk.
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