Emergency officials in Oklahoma are assessing the damage after a violent burst of thunderstorms and tornadoes swept across the Midwest overnight, killing at least nine people and injuring dozens more.
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They are being urged to ensure they have had the MMR jab ahead of The Biggest Weekend in the Midlands.
Jessica Urbano Ramirez was two weeks away from her 13th birthday when she died in the June 14 blaze.
No-one was on board the single-decker vehicle, Humberside Police said.