Strep throat is caused by infection with group A Streptococcus bacteria (Streptococcus pyogenes). You get strep throat primarily through close contact with an infected person. The bacteria spread easily via respiratory droplets released when an infected person coughs, sneezes, talks, laughs, or sings. These droplets can be inhaled by others or land on surfaces that people then touch and transfer to their nose, mouth, or eyes. Sharing food, drinks, cups, plates, or eating utensils with someone infected also spreads the bacteria. Additionally, contact with infected skin sores or wounds can transmit the infection
. The bacteria can live in the nose and throat of infected individuals, including those who do not show symptoms, making it contagious even before symptoms appear. The incubation period is about 2 to 5 days, during which the infection can be spread to others. People remain contagious until they have been on antibiotics for at least 24 to 48 hours
. In summary, strep throat is contracted by:
- Breathing in droplets from an infected person's cough or sneeze
- Touching surfaces contaminated with the bacteria and then touching your face
- Sharing eating or drinking utensils with an infected person
- Direct contact with infected skin lesions or wounds
Good hygiene practices such as frequent handwashing and not sharing utensils help reduce the risk of transmission.
