Abstract
Pertussis seroepidemiology and associated factors in older adults aged ≥40 years with and without acute myocardial infarction (AMI) were studied to investigate whether unrecognised pertussis may precipitate AMI. Sera were obtained from a previous case-control study investigating the role of influenza in precipitating AMIs. Baseline sera were considered pertussis toxin (PT) IgG seropositive at levels ≥5 IU/mL. Levels ≥v62.5 IU/mL were considered indicative of infection in the previous year, and recent infection was indicative at levels ≥125 IU/mL. Of the serum samples tested, 55% (122/222) were seropositive for PT IgG, 5% (11/222) had evidence of infection in the past year and 1.4% (3/222) had evidence of recent infection. Evidence of infection in the past year was found in 3.2% of those aged 65-74 years. Overall, 47.8% of 40-64 year olds and 43.2% of those aged ≥65 years were seronegative for pertussis. Serological evidence of pertussis was not associated with AMI (46/92, 50.0% cases vs. 76/130, 58.5% controls, p=0.2). After adjusting for age, AMI and self-reported pertussis and GP verified influenza vaccination, females (OR = 2.2, 95% CI = 1.1-4.1, p=0.02) were more likely to be seronegative. Just under half of participants had no detectable pertussis immunity and are therefore susceptible to infection. Our study supports the need for an adult pertussis booster to supplement current recommendations.
Keywords: AMI, IgG, older adults, pertussis toxin, pertussis (whooping cough), serosurvey, vaccine.
Infectious Disorders - Drug Targets
Title:The Burden of Pertussis in Patients with and without Recurrent Ischaemic Vascular Events
Volume: 14 Issue: 2
Author(s): Iman Ridda, Anita E. Heywood, Linda Hueston, Dominic E. Dwyer and Chandini R. MacIntyre
Affiliation:
Keywords: AMI, IgG, older adults, pertussis toxin, pertussis (whooping cough), serosurvey, vaccine.
Abstract: Pertussis seroepidemiology and associated factors in older adults aged ≥40 years with and without acute myocardial infarction (AMI) were studied to investigate whether unrecognised pertussis may precipitate AMI. Sera were obtained from a previous case-control study investigating the role of influenza in precipitating AMIs. Baseline sera were considered pertussis toxin (PT) IgG seropositive at levels ≥5 IU/mL. Levels ≥v62.5 IU/mL were considered indicative of infection in the previous year, and recent infection was indicative at levels ≥125 IU/mL. Of the serum samples tested, 55% (122/222) were seropositive for PT IgG, 5% (11/222) had evidence of infection in the past year and 1.4% (3/222) had evidence of recent infection. Evidence of infection in the past year was found in 3.2% of those aged 65-74 years. Overall, 47.8% of 40-64 year olds and 43.2% of those aged ≥65 years were seronegative for pertussis. Serological evidence of pertussis was not associated with AMI (46/92, 50.0% cases vs. 76/130, 58.5% controls, p=0.2). After adjusting for age, AMI and self-reported pertussis and GP verified influenza vaccination, females (OR = 2.2, 95% CI = 1.1-4.1, p=0.02) were more likely to be seronegative. Just under half of participants had no detectable pertussis immunity and are therefore susceptible to infection. Our study supports the need for an adult pertussis booster to supplement current recommendations.
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Cite this article as:
Ridda Iman, Heywood E. Anita, Hueston Linda, Dwyer E. Dominic and MacIntyre R. Chandini, The Burden of Pertussis in Patients with and without Recurrent Ischaemic Vascular Events, Infectious Disorders - Drug Targets 2014; 14 (2) . https://dx.doi.org/10.2174/1871526514666141014145229
DOI https://dx.doi.org/10.2174/1871526514666141014145229 |
Print ISSN 1871-5265 |
Publisher Name Bentham Science Publisher |
Online ISSN 2212-3989 |
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