The spread of disease can happen in a variety of ways, even if travel is slow. The speed of disease transmission depends on multiple factors such as the contagiousness and virulence of the disease, the density of the population, the level of sanitation and hygiene, and the mobility of infected individuals. For example, even if travel was slow, the disease could spread quickly if there were a high concentration of infected individuals living in close proximity or if there was limited access to clean water and sanitation facilities. Additionally, individuals can also unknowingly carry and spread diseases if they are asymptomatic or if they do not practice appropriate hygiene measures to prevent the spread of the disease. Therefore, it is important to follow appropriate public health measures to prevent the spread of diseases, including good hygiene practices, social distancing, and vaccination.
