Identifying Association Rules Between Symptoms in VAERS
by Craig Paardekooper

We can investigate symptom clusters in VAERS by seeing how often symptom B occurs when symptom Aoccurs. When symptom B accompanies symptom A with a high degree of confidence, we call this an association rule.
Dataset
For each VAERs record there are 5 symptoms listed. I looked at 600,000 records for the year 2021 USA data. The file is too
big to upload, but you can access 2021 data from the VAERS website or the Way-back Machine.
MethodI used a datamining technique called Association Rule Mining. It looked at every instance where symptom A occurred at least 1.5 in 10000 times, and then provided the probability (confidence) that symptom B would also occur. The minimum confidence level was set to 0.2

Results
1. Association Rules :Using this process I identified 1618 association rules. These can be viewed in a CSV file attached. https://howbad.info/sym-vaers.csv
Amongst these rules I found that –40% of the reports of myocarditis also report troponin increase and chest pain. So myocarditis may be asymptomatic as regards chest pain – and not everyone who has myocarditis therefore carries out a troponin test. Given the possible asympt
omatic nature of this condition, it is therefore recommended that every vaccinated person has a troponin test.
2. Frequency of Symptoms :High on the frequency list were pain, fever, headache and nausea – these were not localised to the injection site, but see
med systemic.
Worryingly, arthralgia also occurred with very high frequency - suggesting the possibility of an auto-immune attack against joints. COVID-19 also occurred with very high frequency – and it would therefore be an error to call these “break-throughcases”, since they are a primary symptom of the vaccine rather than an occasional or rare one.

Top 5 symptoms for “Symptom 1”

Repeating the analysis with different parameters
The following parameters were usedResults
1. Association Rules :I had simply lowered the support parameter to 0.0001 so as to pick up rarer events. This resulted in the generation of3542 association rules. The CSV is available here – https://howbad.info/sym3.csv
The Association Rules applying to exposure to the vaccine during pregnancy are shown below –This indicates that in the reported incidents of adverse events, there is high confidence of foetal death (78%) and spontan
eous abortion (56%) following exposure to the vaccine during pregnancy.
It follows that mothers should avoid any vaccination for COVID-19 during pregnancy, and avoid any vaccination before
conception if they wish to protect the child.
2. Frequency of Symptoms :Here are the 30 most common symptoms following COVID-19 Vaccination based on a pool of 600,000 records.
[('Headache', 91057),('Fatigue', 79010),('Chills', 74749),('Dizziness', 56591),('Pain', 48486),('Pyrexia', 46911),('Pain in extremity', 38103),('Nausea', 37064),('Arthralgia', 35154),('Dyspnoea', 28452),('Injection site pain', 28048),('COVID-19', 25291),('Myalgia', 24284),('Rash', 24027),('Asthenia', 23939),('Pruritus', 22715),('Injection site erythema', 22205),('Erythema', 18489),('Diarrhoea', 18161),('Chest pain', 16923),('Injection site swelling', 15926),('Cough', 15712),('Feeling abnormal', 15350),('Injection site pruritus', 14971),('Hyperhidrosis', 14684),('Hypoaesthesia', 14602),('Lymphadenopathy', 14111),('SARS-CoV-2 test positive', 12719),('Blood test', 12620),('Urticaria', 12585)]

Pain in extremities is associated with thromb
osis and clotting
Arthralgia is a symptom of arthritis suggesti
ng a potential auto-immune effectCovid-19 is a prominent symptom suggesting the inefficacy of the vaccine
Rash is a symptom associated with Herpes Zoster, that occurred with high frequency in Pfiz
ers own study.
Chest Pain is associated with myocarditis andcardiac arrest
Hypoaesthesia is numbness, especially in theextremities – associated with blood loss caus
ed by micro-clotting