When new similar symptoms in different unwell people are observed, it can be assumed the cause is a new transmissible virus ( pathogen). A process is then followed to find the virus and demonstrate that it causes the same or similar unwellness in healthy people. The new symptoms of unwellness (disease) is usually given a new name, and once the pathogenic virus has been found from a sample from the unwell people, tests and medicines can be created.
That is a summary of the science of finding pathogenic viruses making people unwell and then creating appropriate medicines.
There is a outline description of this process below which is summarised from three articles written by a few scientists who have experience and who are professionals especially in the field of virology.
What happens and has happened
So, as I described, when new similar symptoms in different unwell people are observed, it can be assumed a new transmissible virus (pathogen) is the cause.
Samples from the unwell people are examined in an attempt to isolate a new virus (find only the whole virus), characterise it (describe only the whole virus) and sequence it (describe what the whole virus is made of).
To date, there has been no isolation, no characterisation, nor sequencing of complete viruses (viral genomes) from samples from unwell people. So a new virus that may be causing the unwell symptoms has not been found.
Instead, short genetic sequences found in the samples are claimed to be part of a new viral genome, and longer sequences are hypothesized (supposed to exist) by stringing short sequences together. The different short sequences strung together are said to be the genome of a new virus, when the whole sequence has actually not been found. So a complete viral genome of a new virus has not been found, and so a new virus has not been found.
Validation using control experiments
The same experiment as above to find the complete viral genome is also done with samples from healthy people to make sure the same results are not seen as with samples from unwell people. This is called control experiment and it helps prove the existence of a new virus from a sample from an unwell person. These control experiments have not been done when attempting to find a virus, and so again, a new virus has not been found that causes its associated unwell symptoms.
Virus/disease related tests
Tests for viruses causing a disease have to be calibrated (aligned) and be related to the new virus (antigen), or to what the body produces (antibody) to counteract the virus (antigen). Tests for viruses causing a disease cannot be calibrated (aligned) to a virus that has not been found, nor can the tests be calibrated (aligned) to an antibody created by your body in reaction to a virus when the virus has not been found. Questions therefore arise as to why tests for viruses causing a disease are created, and as to what they test for.
Until a new virus has been found, there is obviously no reason to create medicines to prevent the replication, transmission or symptoms of the virus, because the virus has not been found. However, medicines and vaccines are said to be made to prevent the replication, transmission or symptoms of a virus that has not been found. Vaccines are said to have parts of the virus to help the body create an immune response to the virus which has not been found. It cannot be said that a virus which has not been found, can replicate, be transmitted, or can give you symptoms of unwellness, because the virus has not been found. It cannot be said that your body can create an immune response to a virus, when the virus has not been found. Question therefore arise as to why medicines and vaccines are made, and as to what they contain.
Learn more and discover for yourself
The above text has been added to a free course where you can learn more about what to know and ask about virology and viruses. You can access the full course which has an exercise you can do to ask a few questions yourself to people discussing viruses, virology, related tests and medicines. These questions will help you find your own answers. You can access the course here.
The course will also have an invite to another course that is being developed where you can learn about what actually makes humans unwell, and how to be well (healthy).