# Blood shortages in Argentina and Brazil

> Live situation record from CLSTR: https://clstr.news/situations/blood-shortages-in-argentina-and-brazil
> Updated: 2026-08-22T23:10:25.000Z. Sources: 6. Developments: 2.

Health authorities in Argentina and Brazil have issued urgent calls for blood donations following critical shortages in various regions.

In Argentina, the Blood Bank of the Hospital Regional in Comodoro Rivadavia reported a shortage of O Rh Negative and A Rh Negative blood, specifically noting the need for pediatric oncology patients. In the Salta province, the Regional Hemotherapy Center reported that daily donor numbers have dropped from a required 100–120 to between 60 and 80, impacting stocks needed for cancer, transplants, and surgeries. This decline occurs ahead of the Milagro celebrations.

In Brazil, the Hemosul network in Mato Grosso do Sul reported that O Positive blood stocks fell to approximately 20% of ideal volumes. Because O Positive is the most common blood type in the country, officials emphasized that the shortage poses a high risk to emergency and inpatient care.

## Timeline

### 2026-08-22: Salta blood reserves reach critical levels ahead of Milagro

The Regional Hemotherapy Center of Salta has issued an urgent alert as blood reserves hit critical lows ahead of the Milagro celebrations, with daily donations falling below required levels.

6 sources. https://clstr.news/cluster/salta-blood-reserves-reach-critical-levels-ahead-of-milagro

### 2026-08-13: Blood shortages trigger urgent donation calls in Argentina and Brazil

Health institutions in Argentina and Brazil are calling for urgent blood donations to address shortages of O- and A- types in Comodoro Rivadavia and critical O+ levels in Mato Grosso do Sul.

5 sources. https://clstr.news/cluster/blood-shortages-trigger-urgent-donation-calls-in-argentina-and-brazil

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Cite as: Blood shortages in Argentina and Brazil. CLSTR, https://clstr.news/situations/blood-shortages-in-argentina-and-brazil