Case 5: SARS-CoV-2 second-time attack on a vaccinated person.
What would be the case of a person who has recovered from SARS-CoV-2 and got a vaccine against the virus? Quantum Perturbation Theory describes that it is still possible that the person may be affected by the SARS-CoV-2 again. However, this time the attack will be very weak, even weaker than the person described in case 3. Mathematically, the effect of SARS-CoV-2 on this person is given by the second-order correction to the energy of the perturbed system. Thus, the strength of coronavirus attack on a vaccinated person for the second time is given by,
En(2)={│< Ψn(0)│H p│Ψj(0)>│2 / ( Ej(0) – En(0) )}
Since En(2) < En(1), therefore, the person will get better very quickly. This reduction in the COVID-19 attack could be attributed to the fact that the body has developed much higher affinity than the previous time and the immunity system has got even higher strength because of two factors: the vaccine and the second attack of SARS-CoV-2. Similarly, by adding any additional factor which can further boost the affinity and the resistance of the immunity system, the strength of coronavirus will further decrease and will be given by the very small 3rd order correction to the perturbed energy. Thus, Quantum Perturbation Theory suggests that multiple times suffering from SARS-CoV-2 is not impossible but every additional time or if any extra factor which boosts the body or organ affinity (like a vaccine) the strength of the attack will decline sharply. Figure 6 provides a systematic decrease in the effect of SARS-CoV-2 in such circumstances.