African swine fever has been detected near a high-security Barcelona laboratory, raising serious questions about a potential leak.

The outbreak, which has killed at least 13 wild boar in the Bellaterra area, coincides with major construction work at the implicated Centre de Recerca en Sanitat Animal (CReSA).

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Consequently, a scientific committee is now investigating whether the deadly virus escaped from the facility.

African Swine Fever Outbreak Coincides With Lab Construction

The CReSA, a leading animal health research centre under the Catalan government, was undergoing a 3,000-square-metre expansion when the outbreak was discovered. The laboratory specialises in studying the African swine fever virus, which requires a high Biosafety Level 3 (BSL-3) containment. However, the presence of heavy machinery and construction workers has fuelled speculation about a possible breach in biosecurity protocols.

According to a report by El País, the laboratory has refused to answer questions about whether the construction weakened its security measures. Meanwhile, genetic analysis by Spain’s national reference laboratory suggests the virus strain is similar to one used in research since 2007, rather than a variant currently circulating in Europe.

This development is particularly concerning for Catalonia’s agricultural sector. The region has been grappling with significant housing pressures, as seen in the ongoing efforts to rehabilitate housing in Ciutat Vella. A major disease outbreak could further strain local resources and the economy.

Experts Weigh In On Potential Causes

Several prominent scientists have commented on the unusual circumstances. José Manuel Sánchez Vizcaíno, a world-renowned expert on African swine fever, stated that epidemiological probabilities point towards a possible laboratory escape. “Accidents can happen,” he noted, referencing historical precedents like a 2007 foot-and-mouth disease leak at the UK’s Pirbright Institute, which was also linked to construction work.

However, other experts urge caution. Christian Gortázar, a researcher at the Institute for Game and Wildlife Research, initially considered the possibility of deliberate sabotage. He highlighted the virus’s large size, making accidental airborne transmission highly unlikely compared to smaller pathogens. Nevertheless, he admitted that the new factor of ongoing construction “calls for attention.”

The situation remains fluid, with the scientific committee’s investigation ongoing. The committee itself includes Xavier Abad, the controversial head of the CReSA’s Biocontainment Unit, who had publicly warned about laboratory accidents just weeks before the outbreak. The lab has since issued a statement, certified by the construction management, claiming no incidents affecting biosecurity have occurred.

The African swine fever outbreak near Barcelona serves as a stark reminder of the constant vigilance required in high-containment biological research. As the investigation continues, authorities are working to contain the virus and prevent any spread to domestic pig farms, which would have devastating economic consequences.

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