Department of Public Health

 Department of Public Health Research Research areas Epidemiology, Environment and Biostatistics Vaccination epidemiology

Vaccination epidemiology

In 2019, the WHO put vaccine scepticism on their top 10 list of global threats to public health. We experienced it ourselves in Denmark when introducing the HPV vaccine, and there has been discussions in connection with vaccination against COVID-19.

When we introduce vaccines to a large number of citizens, symptoms that actually have other causes may occur in temporal relations with the vaccines, just by accident. If the true causes of the symptoms are unclear, then the vaccine will often be a tangible explanation in the hunt for a cause. Thus, our research aims to contribute to greater confidence in the vaccination programme by identifying the actual side effects and by rejecting side effects that have other causes.

Research areas

We have a particular focus on non-specific symptoms. We often cannot find information about these in the registers, and, it is therefore necessary to collect the information directly from the citizens.

Currently, our research focuses on two projects:

  • Possible side effects from Corona vaccine
  • Possible causes of symptoms after HPV vaccination

Recent publications

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Liew, Z., Ritz, B., Bonefeld-Jørgensen, E. C., Henriksen, T. B., Nøhr, E. A., Bech, B. H., Fei, C., Bossi, R., von Ehrenstein, O. S., Streja, E., Uldall, P. V. & Olsen, J. (2014). Prenatal exposure to perfluorinated chemicals and risk of congenital cerebral palsy in children. Poster session presented at 2014 World Congress on Epidemiology, Anchorage, AK, United States.
Liew, Z., Ritz, B., Bonefeld-Jørgensen, E. C., Henriksen, T. B., Nohr, E. A., Bech, B. H., Fei, C., Bossi, R., von Ehrenstein, O. S., Streja, E., Uldall, P. & Olsen, J. (2014). Prenatal Exposure to Perfluoroalkyl Substances and the Risk of Congenital Cerebral Palsy in Children. American Journal of Epidemiology, 180(6), 574-81. https://doi.org/10.1093/aje/kwu179
Munk-Olsen, T., Bech, B. H., Vestergaard, M., Li, J., Olsen, J. & Laursen, T. M. (2014). Psychiatric disorders following fetal death: a population-based cohort study. BMJ Open, 4(6), e005187. https://doi.org/10.1136/bmjopen-2014-005187
Bach, C. C., Henriksen, T. B., Bossi, R., Bech, B. H., Fuglsang, J., Olsen, J. & Nøhr, E. A. (2014). Stability of perfluoroalkyl acids in whole blood from pregnant women. Poster session presented at Young Researchers Conference on Environmental Epidemiology, Barcelona, Spain.
Zamora-Ros, R., Luján-Barroso, L., Bueno-de-Mesquita, H. B., Dik, V. K., Boeing, H., Steffen, A., Tjønneland, A., Olsen, A. V., Bech, B. H., Overvad, K., Boutron-Ruault, M.-C., Racine, A., Fagherazzi, G., Kuhn, T., Katzke, V., Trichopoulou, A., Lagiou, P., Trichopoulos, D., Tumino, R. ... González, C. A. (2014). Tea and coffee consumption and risk of esophageal cancer: the European Prospective Investigation into Cancer and Nutrition (EPIC) study. International Journal of Cancer, 135(6), 1470-9. https://doi.org/10.1002/ijc.28789
Bech, B. H., Kjaersgaard, M. I. S., Pedersen, H. S., Howards, P. P., Sørensen, M. J., Olsen, J., Parner, E. T., Pedersen, L. H., Vestergaard, M. & Christensen, J. (2014). Use of antiepileptic drugs during pregnancy and risk of spontaneous abortion and stillbirth: population based cohort study. BMJ, 349, g5159.
Streja, E., Miller, J., Bech, B. H., Pedersen, L. H., Yeargin-Allsoop, M., Van Naarden Braun, K., Schendel, D., Christensen, D., Uldall, P. & Olsen, J. (2013). Congenital cerebral palsy and prenatal exposure to self-reported maternal infections, fever or smoking. Abstract from European Congress of Epidemiology 2013, Aarhus, Denmark.

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BiCoVac

A research project that aims to clarify frequency of symptoms among vaccinated vs. unvaccinated persons.
Revised 22.01.2026
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