Japanese Researchers Correlate COVID-19 mRNA Antibody Count & Fever
Researchers from Okayama University in Japan investigated the link between COVID-19 mRNA vaccines and side effects such as fever and fatigue, most often only lasting for an abbreviated period of time. The Japan-based research team enrolled 49 participants (university staff and students) who were not exposed to previous SARS-CoV-2 infection. Investigating the relationship between these side effects and the vaccine, the investigators found a relationship or an association between the incidence of fever and the number of antibodies in a particular person. This became more prominent after the third booster dose, as reported in the Journal of Epidemiology.
In this study, the participants were grouped into a “fever” and “non-fever” cohort in association with survey results. Interestingly the fever group was younger (20 to 49 years old) with a history of allergies. Studying the various levels of antibodies at varying times, the authors found the individuals in the fever group had markedly higher antibody counts than the other group.
Monitoring for any adverse reaction one week after the participants received the third dose of mRNA-1273 (Moderna), the study team measured antibody levels before and after the third dose was administered to the participants.
By employing various statistics, the study team probed for linkages associated with individuals’ fever and antibody levels at incremental times. The team factored in various variables such as differences in sex, age, preexisting allergy, and use of fever-reducing drugs associated with the participants.
What did they find?
By week number 1 post-vaccination, the investigators observed significantly greater antibody counts in the fever group as compared to the non-fever group. But by a month out, the correlation wanes between the frequency of fever and antibody count.
The first study highlighting associations between the triggering of a fever and antibody levels at various time points after the third dose of the mRNA-1273
Lead Research/Investigator
Naomi Matsumoto
Tomoka Kadowaki
Call to Action: Check out “Association Between Fever and Antibody Titer Trends After a Third Dose of the mRNA-1273 Vaccine.”