"The revised Pfizer [trials] numbers could also be reported as 99.9% of people in the vaccine group and 99.1% of people in the placebo group didn’t test positive. [never had any disease in the first place] "
https://www.zoeharcombe.com/2020/12/chadox1-ncov-19-the-lancet-papers/

"The Oxford/AstraZeneca trials numbers: 99.5% of the vaccine group and 98.3% of the placebo group didn’t test positive [never had any disease at any stage in the trials]"

"None of the Pfizer, Oxford, Moderna, Janssen, Sinopharm and Sinovac trials are designed to test reduction in severe Covid-19 (hospital admission, ICU, or death) or interruption of transmission."

"They are all focused on detection of a positive test and at least one symptom of Covid-19 and the comparison of those results between the vaccine and placebo arm."

"To think that vaccines are being licensed on some 70 people who have avoided catching COVID is shocking! 71 people is the difference between the placebo and vaccine." https://twitter.com/j_jric/status/1343887196038819841?s=19

WHAT "V_CCINE EFFICACY" REALLY MEANS: "Detection of a positive test [not a Covid19 case which requires most symptoms] and at least one symptom of Covid-19 [could be a runny nose] and the comparison of those results between the vaccine and placebo arm"

Symptoms of COVID-19 (WHO)
Fever
Dry cough
Fatigue
Loss of taste or smell,
Nasal congestion,
Conjunctivitis (also known as red eyes)
Sore throat
Headache
Muscle or joint pain,
Different types of skin rash,
Nausea or vomiting
Diarrhea
Chills or dizziness https://www.who.int/news-room/q-a-detail/coronavirus-disease-covid-19