The impact of helminths on the response to immunization and on the incidence of infection and disease in childhood in Uganda: design of a randomized, double-blind, placebo-controlled, factorial trial of deworming interventions delivered in pregnancy and early childhood
2007

Effects of Helminths on Immunization and Disease in Ugandan Children

Sample size: 2500 publication Evidence: moderate

Author Information

Author(s): Elliott Alison M, Kizza Moses, Quigley Maria A, Ndibazza Juliet, Nampijja Margaret, Muhangi Lawrence, Morison Linda, Namujju Proscovia B, Muwanga Moses, Kabatereine Narcis, Whitworth James AG

Primary Institution: Uganda Virus Research Institute

Hypothesis

Maternal and childhood helminth infections reduce the effectiveness of childhood immunizations and increase susceptibility to viral and bacterial infectious diseases, while reducing the incidence of diseases mediated by poorly-regulated inflammatory responses.

Conclusion

This trial is the first to examine the effects of helminths and their treatment in pregnancy and early childhood on immunological, infectious disease, and allergic disease outcomes.

Supporting Evidence

  • Helminths affect immune responses, potentially impairing vaccine efficacy.
  • Over 2 billion people are infected with helminths worldwide.
  • Helminth infections may have both detrimental and beneficial effects on health.

Takeaway

The study looks at how worms in pregnant women and young children affect their immune responses and health, and whether treating these worms can help.

Methodology

The trial uses a 2 X 2(x2) factorial design with three randomized, double-blind, placebo-controlled interventions in pregnant women and their children.

Potential Biases

Potential biases may arise from the community's varying exposure to helminths and other confounding factors.

Limitations

The sample size may be insufficient for evaluation of rare outcomes, and results may not be generalizable due to differences in communities.

Participant Demographics

Participants include pregnant women and their children from semiurban, rural, and fishing communities in Uganda.

Digital Object Identifier (DOI)

10.1177/1740774506075248

Want to read the original?

Access the complete publication on the publisher's website

View Original Publication