Misprision of felony was abolished in most English speaking countries as part of a reform to overcome the problems created by the distinction between felonies and misdemeanours. Very few jurisdictions created a statutory form. It is true that it appears in statutory form in the United States Code, but it has been narrowly interpreted to mean that simply saying nothing is not of itself a crime. It requires some form of active concealment. Canada and New Zealand do not have it. The UK didn't have it in 2014, but Ireland has it in relation to child sexual abuse sincev2012, and Victoria did the same in 2014. Some countries in the continental legal system have an equivalent,  like France and Colombia, but Germany and Holland do not. Most countries have some kind of welfare reporting for children, but in many jurisdictions clergy are not mandatory reporters