In perhaps the most disconcerting news from a harrowing day on Thursday, Chinese officials have revealed that not all those infected with the Wuhan virus have a fever.

China’s National Health Commission announced that five of the 17 people who have died in Hubei province after being infected with the new SARS-like coronavirus did not display symptoms of fever. Instead, their symptoms included breathing difficulty, chest tightness, and coughing.

This revelation is a worrying one since, thus far, screening procedures targeting the virus at airports, train stations, and roads in China have relied mostly on taking people’s temperature.

In yet more frightening news, the commission also said that people with no recent travel history to the virus’ epicenter in Wuhan have also started coming down with the disease, which spreads person-to-person via the respiratory system.

Finally, the first death from the virus outside of Hubei province has been confirmed with authorities in Hebei province reportingthe death of an 80-year-old man.