Analysis of information sources in references of the Wikipedia article "Dung dịch rửa tay khô" in Vietnamese language version.
CDC recommends washing hands with soap and water whenever possible because hand washing reduces the amounts of all types of germs and chemicals on hands. But if soap and water are not available, using a hand sanitizer with at least 60% alcohol can help... sanitizers do not eliminate all types of germs... Hand sanitizers may not be as effective when hands are visibly dirty or greasy... Hand sanitizers might not remove harmful chemicals
