People with a genuine background in science know how worthless the majority of research is. Virology being on the weaker end of the spectrum since the subject matter is so difficult to study. As for "terrain theory", the sort of cretin who denies the role of all the various metabolic systems in regulating health is the same sort of cretin who spent the last 3 years thinking sickness is completely idiopathic and that immune systems do not exist. Aka thousands of "scientists".