The volatile situation in southern Nigeria continues to intensify, with reports of clashes between militants and police. A devastating attack on a city in Kaduna state has left dozens reported missing, according to witnesses. The authorities are battling to contain the crisis, which has {displacedthousands of people and {broughthardship to a region

very first, several vaccines over the years have the truth is been tested in randomized, placebo-controlled trials. these types of trials are thought of a gold-standard in medication. since the participants are randomly assigned to receive the vaccine or maybe a placebo — which may be saline but doesn’t should be — the effects are less at