Staff at the British Heart Foundation warn that a lack of confidence is putting lives at risk.
Vaping causes “significantly less” staining to teeth than regular cigarettes, scientists have found.
The study is the first to show that transmission can occur via contact between the nose and the hands after exposure to pneumococcus bacteria.
Researchers believe their findings emphasise the importance of managing pain and discomfort after having a baby.
Two potential suspects were released without charge on Friday night.