It is also still too early to forecast the impact of pictorial health warning (PHW) labels.

预测图片健康警语标签的影响也为时过早。

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Dr Marion Lyons, director of health protection for Public Health Wales (PHW), said they were "concerned" about the outbreak.

BBC: Boy with measles

However, Public Health Wales (PHW) has warned that despite those immunisations the outbreak has not been brought under control.

BBC: Swansea measles epidemic: Confirmed cases jump to 693

In the whole of Wales, PHW said 823 people aged between 10 and 18 received MMR in the same period.

BBC: Swansea measles: Cases rise by 20 to 1,094