Alice Catherine Evans service worker was protected by law. Alice became interested in the disease brucellosis and its relationship to fresh, unpasteurized milk. Alice's investigation focused on the organism "Bacillus abortus", known to cause miscarriages in animals. Alice learned that the microbe thrived in infected cows as well as animals that appeared healthy. The reports hypothesized that since the bacteria was found in cow's milk, a threat to human health was likely. Evans decided to investigate this; she wondered whether the disease in cows could be the cause of undulant fever in humans. She reported her findings to the Society of American Bacteriologists
Demographic threat numbered only slightly fewer than Protestants. There is debate over whether and to what extent this trend will continue and its possible impact on the political situation. Russia fears the "demographic threat" posed by the potential for "large-scale Chinese immigration" to its thinly populated far east. Illegal immigration of Chinese nationals is a special concern. Some in the United States have expressed concern about the "demographic threat" posed by millions of migrants from Mexico and Latin America and their descendants. Migration Stock is the number of people that live in an area that they were not originally from and Migration