With an MD from Brown University in Providence, Rhode Island, William D. Jones is an OK-based medical practitioner and the secretary and treasurer of the Oklahoma College of Occupational and Environmental Medicine. As a specialist in occupational and preventive medicine, William D. Jones is interested in practical ways people can lower infection rates in their homes, work, and society. Infections result from bacteria, viruses, and parasites that enter the body and disrupt normal functioning. A common way for infections to spread across geographic locations is through travelers. However, precautions in times of an outbreak can help mitigate the spread. Perhaps the most important precaution is for travelers to receive immunizations before a trip. Travelers also should avoid getting tattoos or injection while on foreign trips because people in some parts of the world reuse tattoo equipment and needles. In countries with yellow fever and malaria-carrying mosquitoes, travelers should use an insect repellent containing Deet, a brand of diethyltoluamide. Travelers also should avoid all drinks that are not bottled, including water, and try not to consume dairy products due to lack of milk pasteurization.