The public health authorities in both the United States and Europe took up fundamental measures to control epidemics that dated back to Medieval times of the Bubonic Plague. They aimed to reduce the transmission of the pathogen by preventing contact. They framed their public health orders in scientific ideas of their understanding of how the influenza microbe spread through the air by coughing and sneezing, and their conception of the pathogenesis of influenza. Since they concluded that the pathogen was transmitted through the air, efforts to control contagion were organized to prevent those infected from sharing the same air as the uninfected. Public gatherings and the coming together of people in close quarters was seen as a potential agency for the transmission of the disease. The public health authorities believed that good ventilation and fresh air were "the best of all general measures for prevention, and this implies the avoidance of crowded meetings," (BMJ, 10/19/1918). This translated into the controversial and imperative measure of closing of many public institutions and banning of public gatherings during the time of an epidemic.
The rigidity of these regulations varied immensely with the power of the local health departments and severity of the influenza outbreak. In the United States, the Committee of the American Public Health Association ( APHA) issued measures in a report to limit large gatherings. The committee held that any type of gathering of people, with the mixing of bodies and sharing of breath in crowded rooms, was dangerous. Nonessential meetings were to be prohibited. They determined that saloons, dance halls, and cinemas should be closed and public funerals should be prohibited since they were unnecessary assemblies. Churches were allowed to remain open, but the committee believed that only the minimum services should be conducted and the intimacy reduced. Street cars were thought to be a special menace to society with poor ventilation, crowding and uncleanliness. The committee encouraged the staggering of opening and closing hours in stores and factories to prevent overcrowding and for people to walk to work when possible (JAMA, 12/21/1918). Some of the regulations in Britain were milder, such as limiting music hall performances to less than three consecutive hours and allowing a half-hour for ventilation between shows (BMJ, 11/30/1918). In Switzerland, theaters, cinemas, concerts and shooting matches were all suspended when the epidemic struck, which led to a state of panic (BMJ, 10/19/1918). This variation in response was most likely due to differences in authority of the public health agencies and societal acceptance of their measures as necessary. This necessitated a shared belief in the concept of contagion and some faith in the actions of science to allow them to overcome this plague.