Following is a list compiled based on the survey responded to by 21st Century Schoolhouse participants.

These represent the students' thoughts on what the major environmental health concerns are for each of the countries. Each disease/health issue is linked to Centers for Disease Control resource sites for further information.

Please review the list and then click on Next below for further directions.

Disease/Health Concern	CDC Resource Links
AIDS	http://www.cdc.gov/nchstp/hiv_aids/pubs/facts.htm
Bilharzia	http://www.cdc.gov/ncidod/dpd/parasites/schistosomiasis
Brucellosis	http://www.cdc.gov/ncidod/dbmd/diseaseinfo/brucellosis
Chagas disease	http://www.cdc.gov/ncidod/dpd/parasites/chagasdisease
Cholera and Dysentery	http://www.cdc.gov/health/diseases.htm http://www.cdc.gov/ncidod/dbmd/diseaseinfo/cholera
Dengue Fever	http://www.cdc.gov/ncidod/dvbid/dhspot98.htm
E. Coli	http://www.cdc.gov/ncidod/dbmd/diseaseinfo/escherichiacoli
Hantavirus	http://www.cdc.gov/ncidod/diseases/hanta/hps/index.htm
Hepatitis B	http://www.cdc.gov/ncidod/diseases/hepatitis/b/index.htm
Influenza	http://www.cdc.gov/ncidod/diseases/flu/fluvirus.htm
Junin (Argentine Hemorrhagic Fever)	http://www.cdc.gov/ncidod/dvrd/spb/mnpages/factmenu.htm
Lung Cancer	http://www.cdc.gov/health/cancer.htm
Malaria	http://www.cdc.gov/ncidod/dpd/parasites/malaria/default.htm
Meningitis	http://www.cdc.gov/ncidod/dvrd/virlmen.htm http://www.cdc.gov/ncidod/dbmd/diseaseinfo/meningococcal_g.htm
Respiratory illnesses (i.e. asthma, allergies)	http://www.cdc.gov/nceh/programs/asthma/default.htm
Ross River Virus	http://www.cdc.gov/ncidod/eid/vol2no2/lindsay.htm
Skin Cancer	http://www.cdc.gov/cancer/nscpep/skin.htm
Tuberculosis	http://www.cdc.gov/nchstp/tb/faqs/qa.htm
Water pollution/toxicity	http://www.who.org/water_sanitation_health/GDWQ/GWDWQindex