China’s General Administration of Quality Supervision, Inspection and Quarantine has issued an alert for several foreign contagious and potentially fatal diseases that include Middle East Respiratory Syndrome (MERS), Polio and Ebola virus, reported China News on July 28.
The state health watchdog urged every port in the country to carefully check for the three diseases with each visitor entry, as well as carefully inspect each inbound flight from Africa and Middle East.
Ebola is one of the deadliest contagious diseases in the world. Its death rate in infected patients is 50 to 90%. By the end of July 20, 660 patients suffering from the disease out of 1,093 total cases in Africa had died. Between September 2012 to July 23, 2014, the MERS disease was responsible for 291 fatalities and a total of 837 cases around the world. From the start of the year until July 1, there have been 112 new cases of polio worldwide, according to another report by China News.
In July 2011, China had an outbreak of polio in the Xinjiang Uyghur Autonomous region after the disease was transmitted from Pakistan. Within three months, there were 21 cases of the disease in the region. The outbreak cost the country RMB 320 million ($51.8 million) that year, reported Global Hospital Net. 
Guangdong’s airport inspection bureau has tightened its inspection for visitors and flights. The provincial disease inspection bureau warned travelers to avoid coming into contact with wild animals, infected patients, uncooked food, or untreated drinking water when travelling to disease-affected countries in Africa or the Middle East.
If any visitors returning from Guinea, Libya or Sierra Leone and its neighboring regions are experiencing a fever, sore throat, cold, diarrhea or partial body numbness, they should immediately contact the disease inspection bureau.