The haunting picture shared during the Nepal earthquake

This was one of the most shared photos in the wake of the Nepal earthquake in April. It's not a fake, but misleading nonetheless.

Labelled as showing a "two-year-old sister protected by four-year-old brother in Nepal", it was shared across Facebook and Twitter and prompted calls for donations.

The photograph was actually taken in a remote village in Vietnam back in 2007.

"This is perhaps my most shared photo," says the photographer Na Son Nguyen, "but unfortunately in the wrong context."