3 PM: Trump announces his VP, Biden campaign latest, child vaccination rates & more

Former President Donald Trump has announced his running mate as the Republican National Convention gets underway in Milwaukee. Meanwhile, calls for President Joe Biden to drop out of the presidential race from within his party have largely come to a halt. Severe storms are expected in parts of the Midwest today. A suspected serial killer in Kenya has confessed to murdering dozens of women over the past two years. And, new data shows a concerning drop of vaccinated children globally since before the Covid-19 pandemic.

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