FIG. 1.

Theoretical time courses of the SARS-CoV-2 virus growth (red curves), bacterial growth (purple curves), and host antibody production (blue curves) for four scenarios. (A) A young healthy individual who has no problems developing antibodies to the virus infection. (B) An old individual who experiences delayed antibody production, resulting in bacterial growth as well as increased virus growth. (C) An old individual for whom a bacteriophage cocktail against bacterial growth was introduced as a part of standard therapy. Increase of bacteriophages is marked (green curve) with the time of treatment (green arrow). The relationship between bacteriophages and bacteria can be described by the Lotkka-Voltera population model. The viral load does not decrease until the body's natural antiviral antibodies are produced but more time is bought for this to happen. (D) An old individual for whom synthetic antibodies were introduced (brown curve), creating an immediate reduction in the viral load and once again buying time for the natural antibodies to be produced. SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.