The Centers for Disease Control and Prevention has confirmed that at least six American citizens in the Democratic Republic of Congo were exposed to the Ebola virus during the ongoing outbreak that has prompted the World Health Organization to declare an international public health emergency. The Americans were working in the affected region when they came into contact with individuals who later tested positive for the disease.
The exposed Americans are being monitored by CDC officials and local health authorities. According to the New York Times, none of the six individuals have shown symptoms of the disease so far, but they remain under close surveillance given the incubation period of the Bundibugyo strain, which can last up to 21 days. The CDC has activated its emergency operations center to coordinate the response.
The Bundibugyo strain responsible for the current outbreak carries a fatality rate estimated between 25 and 50 percent, making it significantly less deadly than the Zaire strain but still extremely dangerous. There is currently no approved vaccine or specific treatment for this variant, which has complicated both the public health response and the monitoring of exposed individuals.
The NY Post reported that the exposed Americans include aid workers, medical professionals and diplomatic staff operating in the eastern Congo region where the outbreak originated. Their identities have not been publicly disclosed for privacy reasons. The State Department is working with the CDC and Congolese authorities to ensure they receive appropriate medical attention and monitoring.
The confirmation of American exposures elevates the domestic political significance of the Ebola outbreak. Congressional leaders from both parties called for immediate briefings from the CDC on the risks posed to American citizens abroad and the measures in place to prevent the virus from reaching US soil. The response is likely to become a talking point in the approaching midterm election season.
CBS News reported that the CDC has issued updated travel advisories for the affected regions of Congo and Uganda, urging non-essential travel to be postponed. Airlines operating routes between the United States and central Africa have been asked to implement enhanced screening protocols for passengers arriving from the outbreak zone.
The exposure of American citizens adds a new dimension to the international response. While the WHO has urged against border closures, the domestic pressure in the United States to take more aggressive protective measures is likely to intensify now that the outbreak has directly affected American nationals. The coming days will determine whether any of the six exposed individuals develop symptoms and require medical evacuation.