11: Total number of diseases listed in the Department of Health website under “Weather and Season-Related Diseases.” The list includes typhoid, cholera, Hepatitis A, food poisoning, diarrhea, sore eyes, measles, dengue, malaria, sunburn and prickly heat.

41: Body temperature in degrees Celsius of someone suffering from heat stroke. The normal temperature is about 36.8 degrees Celsius.

1 to 3: Number of weeks after exposure to typhoid fever before symptoms develop. Symptoms include sustained high fever, headache, weakness, loss of appetite, diarrhea or constipation and abdominal discomfort.

10 to 14: Number of days before a patient with sore eyes is fully recovered and relieved from the disease.

30: Recommended minimum SPF or “sun protection factor” for sunscreen application to prevent sunburn.

4: Number of types of prickly heat or miliaria – clear (miliaria crystalline), white/yellow (miliaria pustulosa), red (miliaria rubra) and deep (miliaria profunda).

1.4 million: Estimated number of Hepatitis A cases that occur worldwide every year.

164,000: Number of deaths caused by measles globally in 2008 – nearly 450 deaths every day or 18 deaths every hour.

3.3 billion: Estimated number of people at risk of malaria worldwide.

545,136: Total number of recorded cases of diarrhea in PH in 2007.

Compiled by Schatzi Quodala, Inquirer Research

Sources: World Health Organization, Dept. of Health, National Statistical Coordination Board, emedicinehealth.com