Parents are being urged to get their children vaccinated against measles. The Health Protection Agency has confirmed almost 50 cases in the North East in recent months.
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The study asked more than 150 teenagers about how much time they spent online and how many texts they sent every day for one week.
The popular figure lived in County Durham and taught at Durham University.
North Tyneside singer-songwriter Sam Fender has said in a social media post he has laryngitis.