In a population that is about to return to work, there is a need to see whether workers are 

immunized against the virus or if they are sick or healthy carriers who may or may not be susceptible to transmit the disease or if they have not been in contact with the virus. 

This selection should lead to the confinement of patients at risk of transmitting the 

pathology or healthy carriers likely to transmit the disease. 

A serological test using a drop of blood can determine in ten minutes whether an individual 

is immune to the disease based on its production of specific Igg and GMI. 

This test can be repeated several times depending on the evolution of the symptoms and the 

pandemic. 

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If the patient's serological test is negative, he or she can work by protecting themselves against possible patients contagious by the distancing measures in force. 

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If the patient's serological test is positive and is symptomless, the patient should be referred to the patient a PCR test to see if he's still carrying the virus. 

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If the patient's serological test is positive and the PCR test is negative, and the patient does not have no symptoms of the disease he is immune and can work under conditions of 

regulatory distancing. 

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If the patient's serological test is positive and the PCR test is negative and the patient 

has symptoms of the disease he is immune but cannot work and must be retest himself

with a PCR test at a later date and seek the opinion of the attending physician to determine the origin of the illness before returning to work.

 

If the patient's serological test is positive and the PCR test is positive, the patient should be put on confinement and entrust him to his attending physician for the monitoring of his immunity and non-contagiousness. 

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If the patient's serological test is positive and the PCR test is positive, and the patient presents with symptoms, depending on his clinical condition, he should be monitored by his treating physician or by a hospital until healed and not contagious. 

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If the patient's serological test is positive after the symptoms have disappeared and the PCR test is negative twice the worker can go to work because he will be immunized for some time.

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