Colds are usually caused by viral infections, and the title asks about bacterial colds, which generally refers to bacterial upper respiratory tract infections.
Acute upper respiratory tract infection is referred to as the upper sense, for the throat, nasal cavity, pharynx, acute inflammation of the general term, the pathogen can be viruses, can also be bacteria. Viral upper respiratory tract infection, which is often referred to as a cold.
Bacterial upper respiratory tract infections are commonly caused by: hemolytic streptococcus, Haemophilus influenzae, Streptococcus pneumoniae, staphylococcus, etc. Usually the onset of the disease is acute, and may be manifested as chills, fever, cough, cough and sputum, and so on.
If you experience any of the above symptoms, you should seek medical attention.