A breakthrough new vaccine is being developed for whooping cough after an outbreak killed 11 babies in the UK.
The vaccine, in the form of a nasal spray, could offer better protection and stop the virus spreading, scientists say.
A breakthrough new vaccine is being developed for whooping cough after an outbreak killed 11 babies in the UK.
The vaccine, in the form of a nasal spray, could offer better protection and stop the virus spreading, scientists say.