New coronaviruses like to invade the respiratory system, especially the lungs, where they thrive in the fertile ground known as the "virus processing plant". People exhale the virus and inhale it, and then inhale the virus into their bodies, thus spreading the virus between one exhale and one inhale without realizing it.

Nucleic acid testing can help us to find this cunning and stubborn group of viruses. The new coronavirus is spread from the alveoli - bronchi at all levels - trachea - larynx - (and then divided into two ways) nose and throat, one way out of the nasal passage, and the other way out of the oropharynx, these two throat places also become the virus incubation site, so these two parts of the virus is also the most likely to be "caught".

Why do you feel nauseous, tearful and uncomfortable during the nucleic acid test sampling?

The nasal cavity is connected to the eyes through the nasolacrimal duct, so deep poke to the top of the nose, tears will run out, indicating that sampling in place; and deep poke to the epiglottis, will cause nausea, vomiting; and the pharynx is the center of the pharyngeal reflex (pharyngeal muscle contraction), this reflex is sensitive, someone sluggish, is a normal physiological phenomenon; reflex means to find the "virus nest "This is a normal physiological phenomenon.

Nucleic acid testing will generally be done in one of the following two ways, and you only need to cooperate with the following steps.

Nasal swab: remove the mask - tilt your head - hold your breath - hold for 10 seconds - wear the mask (you can close your eyes, it will increase the comfort level) - end;

Pharyngeal swab: take off the mask - tilt your head - open your mouth - expose the tonsils - hold your breath - hold for 10 seconds - put on the mask - end.

Precautions：

① Never dangle, arch your back, spin or roll your tongue to block the small swab channel, and keep your tongue close to the bottom side of your mouth.

② Clean up oral food residues and internal secretions of the nose before testing to reduce external interference.

Safely and effectively cooperate with medical staff to do nucleic acid sampling and build a firm line of defense against the epidemic, let's cheer together!