What does a negative swab look for?

A vaginal swab is used to detect the presence of inflammatory infections and is usually performed on pregnant women.
The swab is a very important test during pregnancy and is usually recommended in the late stages of pregnancy, as it can detect any bacterial infections in the vagina, such as group B streptococcal infections, and fungal infections if they are present.
The vaginal swab test should be performed by a professional doctor. The test is relatively simple, mainly using a clean cotton swab to dip the vaginal secretion and send it to the bacteriological laboratory for culture and testing, so as to exclude some disease-causing bacteria in a timely manner.
If a pregnant woman experiences any discomfort, it is recommended that she consult a doctor in a timely manner, complete the relevant examinations, identify the cause of the disease under the guidance of a professional doctor, and actively target treatment.