Trickle-up theory (reverse adaptation) 1  It starts from street fashion to high fashion. 2  Since 1960s designers and manufactures pay more attention to the customers innovations 3  . They watch people on street to find ideas. 4  The âgypsyâ look is a good example of a street look which reached the runway.
Plague. Plague is an infectious disease caused by bacteria called Yersinia pestis. These bacteria are found mainly in rodents, particularly rats, and in the fleas that feed on them.Other animals and humans usually contract the bacteria from rodent or flea bites.ersinia pestis bacteria are found in animals throughout the world, most commonly in rats but occasionally in other wild animals, such as prairie dogs. Most cases of human plague are caused by bites of infected animals or the infected fleas that feed on them.
-- Yersinia Pestis. Yersinia pestis are Gram-negative bacteria found in certain parts of the world, causing about 1,000 to 3,000 plague cases each year. Cases of plague most commonly occur in Africa, Asia, and South America. Between 10 and 20 cases of bubonic plague happen in the United States every year, most often in rural areas of the Southwest. Yersinia pestis is found most commonly in rats, but occasionally in other animals.