I agree that I am suggesting screening of only those, who are coming from Ebola active area. As this article mentions, incubation period to see symptoms by othe

I agree that I am suggesting screening of only those, who are coming from Ebola active area. As this article mentions, incubation period to see symptoms by other humans is between one week to three weeks after infection. But tests may catch before. Since we are living in globalized world, where people move across borders, I am worried about people carrying virus unknowingly. Many parts of Asia are very dense and it may be overnight catastrophe if this happens. So authorities at the hubs of human activity (US/Europe/China/Japan ...etc) need to be more vigilant than normal humans outside. Please note that "prevention is better than care". Thanks. Edit: small grammar change.