.

“This puts the onus on government officials and public health officials to follow up with travelers after they arrive, to isolate them and trace their contacts if they get sick later,” said Lloyd-Smith, a UCLA professor of ecology and evolutionary biology. “Many governments have started to impose quarantines or even travel bans, as they realize that screening is not sufficient to stop the spread of the coronavirus.”

One major concern, Lloyd-Smith said is that other countries, especially developing nations, lack the infrastructure and resources for those measures, and are therefore vulnerable to importing the disease. “Much of the public health world is very concerned about the virus being introduced into Africa or India, where large populations exist that do not have access to advanced medical care,” he said.

If happy is what you want to be, you must take responsibility and stop expecting things or people to make you happy. You are the source of your own happiness, so stop looking elsewhere. 　1　 Here are a few ways for you to follow.

Be thankful to others. 　2　 It is too easy to take those around us for granted. Show them the same consideration you would like shown to you.

　3　 This goes beyond politeness. It is a form of giving. Treat everyone you meet as if they have a big sign on their chest saying “make me feel important”. If you do this you will discover a hidden source of joy.

Perform acts of kindness. Don’t wait to be asked. 　4　 It doesn’t need to be a big thing, hold the door for a stranger, or smile at anyone you make eye contact with. Look for chances to make others feel good.

Make a decision to be happy. This is the most important step on the road to a happy life. 　5　You are the key to your own happiness, so go ahead, unlock it once and for all.