respiratory tract

Pope Francis died Monday in Rome at the age of 88, just weeks after he was released from hospital following a respiratory tract infection that developed into pneumonia.

In contrast, those that had been exposed to the seasonal flu beforehand had virus only in the respiratory tract — and at pretty low levels.

In an update on Monday, the Vatican said the pontiff has a "polymicrobial infection" of his respiratory tract, which has required a change in his treatment.

It’s a particularly exuberant tortoise nicknamed Typhoid Mary, who got the nickname because she harbors a contagious bacteria that causes upper respiratory tract disease.

Viral genome sequences indicate the teen was infected with the type of H5N1 typically found in wild birds and that it had mutated to better cleave to the respiratory tract.