"He was tested positive for #hantavirus. Other 32 people on bus were tested," the tweet said without divulging further details.
Hantaviruses are a family of viruses spread mainly by rodents and can cause varied disease syndromes in people worldwide, according to the Centres for Disease Control and Prevention (CDC) which is the leading national public health institute of the United State.
Hantaviruses in the Americas are known as "New World" hantaviruses and may cause Hantavirus Pulmonary Syndrome (HPS).
Each hantavirus serotype has a specific rodent host species and is spread to people via aerosolised virus that is shed in urine, feces and saliva, and less frequently by a bite from an infected host, according to the CDC.
The hantavirus report came as China is currently grappling with coronavirus which has resulted in the death of 3,277 people in the country, mostly in its epicentre Hubei province and its capital Wuhan.
Meanwhile, the number of deaths from the coronavirus cases stood at 16,961 across the world, according to multiple reports.