Globalization and disease Spanish soldiers introduced smallpox by contact with natives of the Aztec capital Tenochtitlan. A devastating epidemic broke out among the indigenous people, killing thousands. In 1617, smallpox reached Massachusetts, probably brought by earlier explorers to Nova Scotia, Canada.” By 1638 the disease had broken out among people in Boston, Massachusetts. In 1721 people fled the city after an outbreak, but the residents spread the disease to others throughout the thirteen colonies. Smallpox broke out in six separate epidemics in the United States through 1968. The smallpox vaccine was developed in 1798 by Edward Jenner. By 1979 the disease had been
Mexican Armed Forces was reorganized in 2007–09 into 30 Naval Infantry Battalions, a paratroop battalion, a battalion attached to the Presidential Guard Brigade, two Fast Reaction Forces with six battalions each, and three Special Forces groups. The Naval Infantry are responsible for port security, protection of the ten-kilometer coastal fringe, and patrolling major waterways. The Mexican Maritime Search and Rescue is the Mexican Navy's SAR Unit, which is responsible for improving the quality and effectiveness of the Navy's response to Mexico's maritime emergencies. The Mexican Navy historically has been responsible for the search and rescue operations using its available resources. However, aware of