Story at-a-glance 1  +. Canine leptospirosis, or âlepto,â is an infection caused by at least four species (serovars) of Leptospira bacteria. 2  However, there are over 20 different serovars that are potentially infectious to dogs.3  Leptospirosis isnât a new disease â in fact, itâs ancient.tory at-a-glance 1  +. Canine leptospirosis, or âlepto,â is an infection caused by at least four species (serovars) of Leptospira bacteria. 2  However, there are over 20 different serovars that are potentially infectious to dogs.
Philip Morris, a London-based cigarette manufacturer, created a New York subsidiary in 1902 to sell several of its cigarette brands, including Marlboro. By 1924 they were advertising Marlboro as a woman's cigarette based on the slogan Mild As May.
In 1964, the Surgeon General's report on Smoking and Health came out. This report assisted in allowing the government to regulate the advertisement and sales of cigarettes. The 1960's in general was a time when much of the health hazards of smoking were reported. In 1965, television cigarette ads are taken off the air in Great Britain. In 1966, those health warnings on cigarette packs begin popping up. In 1968, Bravo, a non-tobacco cigarette brand was marketed. Made primarily of lettuce, it failed miserably!