MAIN FACTOR OF SPREAD. Not the Weather, but HUMAN intercourse, especially Commerce; the greater the speed of Commerce, the greater and quicker is the spread of the Flu; it follows the path of HUMAN travel; it is a Contagion solely spread by HUMAN intercourse, viz. “The Influenza Carrier or Carriers.”
Positions in life, which require contact with Travelers, necessarily influence and spread the disease.
“Flu” is spread in the same ratio of speed as the Carrier of IT.
When the Flu is a weakling, his best Nurses and Foster-Mothers are Overcrowding and lack of Pure Air.
Where the Crowd is, there the Flu is: little crowding means little Flu; plenty of Crowding, plenty of Flu.
QUARANTINE AND ISOLATION.
Period of Isolation, for ordinary Flu patients: 12 days.
Period of Isolation, for Influenza-Pneumonia cases, until the end of Convalescence.
Quarantine and Isolation are beset with difficulties owing to the extraordinary contagious nature of the Flu, due to the multiplicity of Contacts, Carriers, and mild undetected cases.
It should be borne in mind that Influenza is a most refractory disease, and not at any time or season is it under our control, and to bring about this condition is as yet an unsolved problem.