How the disease spreads. 1  Breathing in dust that is contaminated with rodent urine or droppings. 2  Direct contact with rodents or their urine and droppings. 3  Bite wounds, although this does not happen frequently.
1 40 percent of American adults get six hours or less per night; 58 percent of teens average only seven hours of sleep or less. 2  The National Sleep Foundation has released updated guidelines detailing the recommended amount of sleep for various age groups.
Therefore, experts typically recommend seven to nine hours sleep for adults. Currently, 59% of U.S. adults meet that standard, but in 1942, 84% did. That means four in 10 Americans get less than the recommended amount of nightly sleep, compared with the 11% who did so 70 years ago.RINCETON, NJ -- Fifty-nine percent of Americans get seven or more hours of sleep at night, while 40% get less than seven hours. Those figures are largely unchanged from Gallup polls in the 1990s and 2000s, but Americans, on average, slept much more in the 1940s.