” M. pneumoniae is spread person-to-person, through droplets expelled through the respiratory tract.”
Which means she shouldn’t be spending time around children, especially. That goes for staged photo-op children on the street as well as her grandchildren, one of whom is an infant.
Or meeting, greeting and coughing all over people at fundraisers.
And if, as reports are surfacing, quite a few of her inner circle have been sick with pneumonia during the past few weeks, the doctors should have kept her away from them and also tested her for it as soon as she had symptoms.