Downing Street has urged parents to be on the “lookout” for symptoms of Strep A bacteria after a rise in infections.

Officials said they can “fully understand” parents’ concern, but stressed the NHS is “well prepared” for such situations.

Asked about the recent rise in cases, the Prime Minister’s official spokesman said: “We are seeing a higher number of cases of Group A strep this year compared to usual.

“The bacteria we know causes a mild infection which is easily treated with antibiotics and in rare circumstances it can get into the bloodstream and cause serious illness.

“It is still uncommon, but it’s important parents are on the lookout for symptoms.

“But the NHS is well prepared to deal with situations like this, working with the UK Health Security Agency.”

He said any parents who are concerned should contact the NHS.

What is Strep A?

Group A streptococcus (or Strep A) is known to cause scarlet fever, throat infections and, in very rare cases, invasive disease.

This can occur when bacteria get into parts of the body where bacteria are not usually found, such as the blood, muscle or the lungs.

It can happen if the bacteria get past a person’s defences, such as through an open wound or when a person’s immune system is depleted.

Most people who come into contact with the bacteria remain well and symptom-free.

Strep A symptoms

The bacteria can be found in the throat and on the skin and people may carry it without displaying any symptoms.

It can live in throats and on hands for long enough to allow easy spread between people through sneezing, kissing and skin contact.

  • high fever
  • severe muscle aches
  • localised muscle tenderness
  • redness at site of a wound

Dr Yimmy Chow, health protection consultant at UKHSA London, said: “Group A streptococcal infections usually result in mild illness, and information has been shared with parents and staff about the signs and symptoms.

“These include a sore throat, fever and minor skin infections, and can be treated with a full course of antibiotics from the GP. In rare incidences, it can be a severe illness and anyone with high fever, severe muscle aches, pain in one area of the body and unexplained vomiting or diarrhoea should call NHS 111 and seek medical help immediately.”