“The program has prevented 18 million children from being paralyzed by polio,” says John Vertefeuille, the CDC’s polio eradication branch chief.
…………………………………………………………………………………………………………. यो मुलुक सिंगापुर जस्तो बनिसकेको छैन मात्र राजनीतिक परिवर्तन...