Pandemic smallpox was responsible for 300–500 million deaths. As recently as the early 1950s, an estimated 50 million cases of smallpox occurred in the world each year. After successful vaccination campaigns throughout the 19th and 20th centuries, the WHO certified the eradication of smallpox in December 1979. To this day, smallpox is the only human infectious disease to have been completely eradicated, and one of two infectious viruses ever to be eradicated. Historically, measles was prevalent throughout the world, as it is highly contagious. According to the U.S. National Immunization Program, 90% of people were infected with measles by age 15.
Guide to Extinction although Conner and Telkes reunited in 2007 to perform single "Shallow" in the reunion show of the first season VH1's Rock of Love with Bret Michaels. Guide to Extinction Guide to Extinction is the third studio album of industrial rock band, Nocturne. It was their first studio album after 2001's Welcome to Paradise. The album was finally released in 2005, shortly after the break-up of the romantic relationship between producer, guitarist Chris Telkes and singer Lacey Conner. Even with this emotional stress upon the band's core members, the album was considered Nocturne's best showcase, and features a variety of tracks