Symptoms usually appear within one to seven ... There are three types of plague – bubonic, septicemic and pneumonic plague. With the pneumonic form of plague – which means it affects the ...

Pneumonic plague adds rapidly developing pneumonia to the list of plague symptoms. It is the only form of plague that can be spread from person to person by inhaling infectious droplets.

Initial symptoms — sudden fever ... Septicemic plague infects the bloodstream. Pneumonic plague, which can be passed from human to human, occurs when the bacillus moves into the pulmonary ...

If a flea that had bitten an infected rat jumped onto a person and bit them, it would transmit bubonic plague. Pneumonic plague was spread from one person to another through coughing or sneezing ...

As noted above, the licensing of pneumonic plague vaccines will rely on efficacy data from animal studies and safety data from human trials. In addition, licensure will require assays that bridge ...