Correct, nobody has said they were the same....here is merely one definition:
Bacteria and viruses are both microscopic microbes. Both of them can cause diseases in plants and animals. Both these types of microbes contain enzymes required for the DNA replication and protein synthesis. But, viruses require a host organism for the production of viral coat proteins. Therefore, they should invade a second organism for their replication. On the other hand, bacteria can reproduce independently by binary fission. Both microbes consist of a huge diversity compared to other life forms. The key difference between bacteria and virus is the consideration of each form as a living or non-*living organism
Both bacteria and viruses can attack or invade the human body, and we have an immune system specifically designed to fight back.
We were discussing (as are various governments around the World) whether the deliberate "triggering" of our immune system FROM ONE UNRELATED DRUG OR VACCINE, might have benefits in fighting another....let me give you one specific example.
Here is a copy-n-paste of general blurb on cancers:
Strictly speaking, cancer is not contagious. But a fair number of cancers are clearly caused by viral or bacterial infections: lymphomas can be triggered by the Epstein-Barr virus, which also causes mononucleosis. Liver cancers can be caused by Hepatitis B and C. Cervical cancers can be caused by human papillomavirus, the major reason behind the development of a vaccine against it. For some of these cancers, nearly 100% of the cases have an infectious link---when researchers check to see if a virus or bacterium is working in the tumor or has left signs of its presence in a patient's blood, the answer is nearly always yes.
A new paper in The Lancet takes a look at the very best data on the prevalence of infection-caused cancers and comes up with some striking numbers. Overall, they estimate that 16% of cancer cases worldwide in 2008 had an infectious cause---2 million out of 12.7 million.
Hepatitis B and C, HPV, and Helicobacter pylori, a bacterium that triggers stomach cancer, caused the lion's share of those cases, about 1.9 million together.
https://www.discovermagazine.com/hea...es-or-bacteria
Now the kicker.......The human immune system can not only recognize and eliminate pathogens, but also cancer cells. Therefore, treatments with weakened pathogens can help the immune system fight cancer. Researchers at the Max Planck Institute for Infection Biology in Berlin have genetically modified the
BCG tuberculosis vaccine so that it stimulates the immune system in a more targeted manner. As a result, the new vaccine provides significantly better protection against tuberculosis. A clinical study with bladder cancer patients has now shown that treatment with VPM1002 can successfully prevent tumor recurrence in almost half of the patients who did not previously respond to BCG therapy. The results could lead to the early approval of the drug in bladder cancer therapy.
Yes, VPM1002 is a variant of the original BCG or TB shot that we got as children, to fight a bacterial disease.....and it is now being used to fight cancer, admittedly it is only showing promise against bladder cancers which is normally one of the cancers caused from a bacterial infection.....but what I'm trying to say is that there are numerous examples out there where one drug can have multiple uses, and my guess is that there are 10,000 scientists from all over the world scrambling through their "library" of old tried-n-tested drugs to find one to fight Covid19
Evaluation of VPM1002 as a Bladder Cancer Therapy
Bladder cancer is the ninth most common cancer in the world, and is four times more common in men than in women (77). The main risk factors for developing bladder cancer include smoking, Schistosoma infection (bilharzia), and exposure to industrial chemicals (77, 78). Tumors can be non-muscle invasive, i.e., confined to the mucosa of the bladder wall, or muscle-invasive. More than seventy percent of bladder cancers are detected while they are still non-muscle invasive (79). Due to its immunostimulatory properties, repeated intravesical BCG instillation is the standard adjuvant treatment for intermediate to high-risk non-muscle-invasive bladder cancer (NMIBC) after transurethral resection of the tumors (80–82). BCG therapy reduces the risk of recurrence and the progression to muscle invasive bladder cancer. The repeated instillations require much higher doses and volumes of BCG than vaccination against TB does, and some patients have adverse events that lead to discontinuation of the therapy (83, 84). Adverse events include fever, bladder irritation, decreased bladder capacity, incontinence, hematuria, flu-like symptoms and in approximately 5% of cases, BCG infection (85, 86). Patients undergoing traumatic catheterization are at risk for intraluminal BCG dissemination, resulting in a potentially lethal systemic infection (87).
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5610719/