Globally, the ten leading risk factors account for how many childhood deaths a year in developing countries?
Many countries in Africa had a rate of 0.03 or fewer physicians per 1,000 people between 1990 and 1998. Which country had the highest ratio of physicians per thousand?
What percentage of its Gross Domestic Product (GDP) did the United States allot to health expenditure in the year 2000?
Life expectancy at birth in sub-Saharan Africa is currently estimated at 47 years; without AIDS it is estimated that it would be around how many years?
How many deaths a year are attributed to unsafe water, sanitation, and hygiene?
Which of the following diseases was the cause of the early deaths of Henry David Thoreau (at age 45), Frédéric Chopin (at age 39), and Robert Louis Stevenson (at age 34)?
Which vaccine-preventable disease invades the nervous system and can cause paralysis in a matter of hours?
Which vaccine-preventable disease may be acquired through the bite of an infected mosquito?