One health problem that is a challenge to the global arena is the AIDS/HIV infection. In developing countries like those in the Sub-Saharan Africa, there are about 24.7 million individuals who are positive with the HIV virus, and only 39 percent of the adults receive an antiretroviral treatment (AVERT, 2016). This means that their adult HIV prevalence lands at about 4.7 percent, which is a lot higher than that of the U.K. that is a developed country. In the U.K., there are only about 103,700 individuals who are positive of the HIV virus, which means their adult HIV prevalence lands to as low as 0.19% (AVERT_2, 2016).
Another health problem that is another challenge for the entire globe is hepatitis B. In developing countries like those in Sub-Saharan Africa the endemicity level reaches to about 70% to 90%, including those in Southeast Asia, Central Asia, and the Amazon Basin (World Health Organization, 2016). The developed countries in Western and Northern Europe, as well as those in North America, have low endemicity level, with a carrier rate of only 2% and less than 20% of the population infected with it (World Health Organization, 2016).
References:
AVERT. (2016). HIV and AIDS in Sub-Saharan Africa regional overview. Retrieved July 12, 2016 from http://www.avert.org/professionals/hiv-around-world/sub-saharan-africa/overview.
AVERT_2. (2016). HIV and AIDS in the United Kingdom. Retrieved July 12, 2016 from http://www.avert.org/professionals/hiv-around-world/western-central-europe-north-america/uk.
AVERT_3. (2016). HIV and AIDS in the United States of America. Retrieved July 12, 2016 from http://www.avert.org/professionals/hiv-around-world/western-central-europe-north-america/usa.
World Health Organization. (2016). Hepatitis B. Retrieved July 12, 2016 from http://www.who.int/csr/disease/hepatitis/whocdscsrlyo20022/en/index1.html.