I was even OK with the lack of details, Yoc, since no government wants to hurt more people by causing a panic. But then I did some quick reading, and found out that not only did the GE designers quit over being forced to accept "serious design flaws," but Japan's power companies apparently have a significant decades-long reputation for ignoring safety protocols and covering up data.
Upshot, yes, be safe, and trust your own judgment over anything official. Sick aid workers aren't helpful, no matter how heroic it might sound.