‘Sentinel chickens’ implicate Florida Panhandle as epicenter for Eastern equine encephalitis virus in US

The study revealed extensive genetic diversity as well as spatial dispersal of EEEV within Florida. Additionally, Das and colleagues observed more clustering of the disease in the Panhandle region. The findings, they said, indicate that EEEV is present year-round in the Florida Panhandle and that the region could be “seeding” EEEV epizootics in the rest of the state and the Northeastern US.

Pneumonic Plague in a Dog and Widespread Potential Human Exposure in a Veterinary Hospital, United States

In December 2017, a dog that had pneumonic plague was brought to a veterinary teaching hospital in northern Colorado. Several factors, including signalment, season, imaging, and laboratory findings, contributed to delayed diagnosis and resulted in potential exposure of >116 persons and 46 concurrently hospitalized animals to Yersinia pestis.

Infections among Contacts of Patients with Nipah Virus, India

Researchers conducted a serosurvey of 155 healthcare workers and 124 household and community members who had close contact with 18 patients who had laboratory-confirmed Nipah virus infections in Kerala, India. They detected three subclinical infections; two persons had IgM and IgG and 1 only IgM against Nipah virus.

What was the primary mode of smallpox transmission? Implications for biodefense

This review examines evidence from the history of variolation, data on mucosal infection collected in the last decades of smallpox transmission, aerosol measurements, animal models, reports of smallpox lung among healthcare workers, and the epidemiology of smallpox regarding the potential importance of fine particle aerosol mediated transmission.

Early transmission and case fatality of Ebola virus at the index site of the 2013–16 west African Ebola outbreak: a cross-sectional seroprevalence survey

This study provides the first evidence of Ebola virus-infected survivors from the index site of the west African outbreak. A thorough retrospective epidemiological study done concomitantly among the resident adult population expands understanding of the initiating events including transmission dynamics, probable transmission chains, lower case fatality rates, and the presence of both mild and asymptomatic cases.

Curious Case of Deadly Pig Virus on Remote Vietnamese Farms

More than 200 pigs have been slaughtered after household farms in Hung Yen and Thai Binh provinces were suspected to be contaminated with African swine fever. The strange thing is the affected areas are far from China -- where the disease is ravaging its pork industry -- raising questions of how the disease spread to the remote farms.