Respuesta :
The cold virus causes disease when it enters the digestive tract of the human body.
What is cold virus ?
The cold virus causes infectious disease of the upper respiratory tract that primarily affects the respiratory mucosa of the nose, throat, sinuses, and larynx.
What is Respiratory tract ?
The respiratory tract consist of organs that are involved in breathing. These include the nose, throat, larynx, trachea, bronchi, and lungs.
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