Global regulators are concerned that if Microsoft acquires games publisher Activision Blizzard it could have an unfair advantage in the videogame industry, partly due to the popularity of Call of Duty.

WSJ tech reporter Sarah Needleman joins host Zoe Thomas to explain what makes the Call of Duty franchise so successful.

Plus, WSJ Pro reporter Brian Gormley discusses why patches that can deliver vaccines are attracting more investors.

0:00 Why Call of Duty is so popular
2:42 Why regulators are focused on Call of Duty
3:30 Microsoft and Activision’s comments
3:52 Technology behind vaccination patch
5:59 Delivering micro-needle patches
7:09 How investors feel about this tech

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