Dpt side effects

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Side Effects of DPT (Diphtheria-Pertussis-Tetanus) Vaccine

Introduction to DPT Vaccine Side Effects

The DPT vaccine, which protects against diphtheria, pertussis (whooping cough), and tetanus, is a critical component of routine immunization programs worldwide. However, like all vaccines, it can cause side effects. Understanding these side effects is essential for healthcare providers and patients.

Common Side Effects of DPT Vaccine

Local Reactions

Local reactions at the injection site are among the most common side effects of the DPT vaccine. These reactions include redness, swelling, and tenderness. In a study involving the combination of Haemophilus influenzae type b-tetanus toxoid conjugate vaccine with DPT, local adverse effects were noted to be mild, with redness occurring in 5.9% of cases and significant redness (more than 2.5 cm in diameter) in 0.8% of cases . Tenderness was more frequent in the group receiving the mixed vaccine (26.6%) compared to those receiving separate injections (17.9%) .

Systemic Reactions

Systemic reactions such as fever are less common but can occur. In the same study, fever was infrequent in both treatment groups . Another study highlighted that systemic reactions, including local and systemic adverse reactions, occurred with 14.8% and 6.4% of administered doses, respectively, with a single anaphylactic reaction occurring in each of the higher dose groups .

Severe Side Effects and Concerns

Anaphylactic Reactions

Anaphylactic reactions, though rare, are a severe side effect of the DPT vaccine. In a dose-response study of subcutaneous immunotherapy with a Dermatophagoides pteronyssinus extract, anaphylactic reactions were observed in 0.3% of doses administered in the higher dose groups .

Role of Adjuvants and Impurities

Adverse reactions to the DPT vaccine are not solely due to the pertussis components. Sensitization induced by aluminum adjuvants and impurities in crude toxoids also contribute to these reactions. Aluminum compounds, such as aluminum phosphate and aluminum hydroxide, are commonly used adjuvants, but concerns about their toxicity have led to the evaluation of alternatives like calcium phosphate .

Immunotherapy and DPT Vaccine

Dermatophagoides pteronyssinus (Dpt) Immunotherapy

In the context of immunotherapy, Dermatophagoides pteronyssinus (Dpt) rush immunotherapy in asthmatic patients showed that none of the patients experienced life-threatening side effects. The study demonstrated significant immunologic changes, such as increased Dpt-specific serum IgG synthesis and a negative correlation between Dpt-specific serum IgE and IgG antibodies . This suggests that while immunotherapy can be effective, it must be carefully managed to minimize side effects.

Conclusion

The DPT vaccine is generally safe and effective, but it can cause side effects ranging from mild local reactions to rare but severe anaphylactic reactions. Understanding these side effects and their causes, including the role of adjuvants and impurities, is crucial for optimizing vaccine safety and efficacy. Ongoing research and careful monitoring are essential to ensure the best outcomes for patients receiving the DPT vaccine.

Sources and full results

Most relevant research papers on this topic

Hallucinogen-like effects of N,N-dipropyltryptamine (DPT): possible mediation by serotonin 5-HT1A and 5-HT2A receptors in rodents.

DPT exhibits hallucinogenic effects in rodent models, with the 5-HT2A receptor being a key site of action, but also involving 5-HT1A receptors.

Non-RCTAnimal Study

2007·

69citations

·W. Fantegrossi et al.

Pharmacology, biochemistry, and behavior·

DOI

Adverse reactions after injection of adsorbed diphtheria-pertussis-tetanus (DPT) vaccine are not due only to pertussis organisms or pertussis components in the vaccine.

Adverse reactions to DPT vaccine may be due to factors such as sensitization from aluminium adjuvants and impurities in crude toxoids, suggesting alternatives like calcium phosphate and toxoided purified toxins.

1991·

41citations

·Rajesh K. Gupta et al.

Vaccine·

DOI

Early effects of rush immunotherapy with Dermatophagoides pteronyssinus in asthmatics.

Rush immunotherapy with Dermatophagoides pteronyssinus significantly improves Dpt-specific serum IgG concentration, immunologic score, and late phase skin reactivity in asthmatic patients, with delivered allergen dose also playing a role.

RCT

1997·

16citations

·S. Paranos et al.

Journal of investigational allergology & clinical immunology

Randomized dose-response study of subcutaneous immunotherapy with a Dermatophagoides pteronyssinus extract in patients with respiratory allergy.

A dose of 0.125 SPT units of Dermatophagoides pteronyssinus subcutaneous immunotherapy showed the most favorable risk-benefit profile for treating allergic rhinoconjunctivitis.

RCT

2016·

17citations

·V. Moreno et al.

Immunotherapy·

DOI

Can Haemophilus influenzae type b-tetanus toxoid conjugate vaccine be combined with diphtheria toxoid-pertussis vaccine-tetanus toxoid?

PRP-T vaccine is well tolerated and immunogenic, and combined PRP-T and DPT vaccines perform satisfactorily and may be the preferred method of administration for infants.

RCTLarge Human Trial

1993·

40citations

·David W. Scheifele et al.

CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne

Deoxypodophyllotoxin (DPT) inhibits eosinophil recruitment into the airway and Th2 cytokine expression in an OVA-induced lung inflammation.

DPT from Anthriscus sylvestris Hoffm. effectively reduces eosinophil recruitment and Th2 cytokine expression in an asthmatic mouse model, suggesting potential as an asthma treatment.

Non-RCTAnimal Study

2006·

18citations

·Chang Xin Lin et al.

Planta medica·

DOI

The effectiveness of dextrose prolotherapy in plantar fasciitis

Dextrose prolotherapy is a safe and effective treatment for plantar fasciitis, with potential long-term benefits, comparable to extracorporeal shock wave therapy or platelet-rich plasma injections.

Meta-AnalysisVery Rigorous JournalHighly Cited

2021·

439citations

·Wei-Fu Lai et al.

Medicine·

DOI

[The immunologic impact and adverse effects of simultaneous inoculation with DPT and BCG vaccines].

Simultaneous inoculation of DPT and BCG vaccines in infants shows no adverse effects and improved immune response.

RCT

1990·

1citation

·T. Q. Xu

Zhonghua jie he he hu xi za zhi = Zhonghua jiehe he huxi zazhi = Chinese journal of tuberculosis and respiratory diseases

Evaluation of a new combined inactivated DPT-polio vaccine.

The new combined DPT-polio vaccine (DPTP) shows no severe adverse reactions and a dramatic response to a booster dose, with no statistical difference observed between the three groups for minor side effects.

RCTLarge Human Trial

1986·

16citations

·J. Drucker et al.

Developments in biological standardization

The immunologic impact and adverse effects of simultaneous inoculation with DPT and BCG vaccines

Simultaneous inoculation of DPT and BCG vaccines in infants shows no adverse effects and can effectively boost immune responses against pertussis and diphtheria.

RCT

1990·

1citation

·Xu Tq

Chinese Journal of Tuberculosis and Respiratory Diseases

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