Screening measures have been implemented at Chicago's O'Hare International Airport as part of the US response to an Ebola outbreak affecting several African nations, including the Democratic Republic of Congo, Uganda, and South Sudan. The US Centers for Disease Control and Prevention (CDC) announced that any US passport holder who has traveled to these countries within the last three weeks will be barred from entry for a minimum of 30 days. This decision follows a declaration by the World Health Organization, which labeled the outbreak a public health emergency of international concern due to the rapid increase in cases. Ebola, known for causing severe hemorrhagic fever and high mortality rates, is transmitted through bodily fluids. The CDC's screening protocols at O'Hare include temperature checks and inquiries about potential exposure to the virus. Individuals exhibiting symptoms will be taken to quarantine facilities for further evaluation. In light of the outbreak, US President Donald Trump acknowledged his concerns, noting that while the virus is currently confined to Africa, its potential for spread remains alarming.