…in reality both health and sickness are contagious. The
contagiousness of disease is rapid and violent, whereas that of health is
exceedingly slow and weak. If two bodies are brought into contact with each
other, it is certain that microbial particles will be transmitted from one to
the other. In the same way that disease is rapidly and violently transmitted
from one body to another, the strong health of a healthy person may also
alleviate a very slight condition in a sick person. Our meaning is that the contagiousness
of disease is rapid and violent, while that of health is very slow and of
limited effect, and it is only in minor ills that this modest effect can be
felt. In such cases, the strength of the healthy body overcomes the slight
weakness of the sick body and brings about its health. This is one kind of
healing.
-‘Abdu’l-Baha (Table talks in Akka, authenticated by ‘Abdu’l-Baha;
‘Some Answered Questions’ – 2014 revised translation by the Baha’i World
Centre)