Author: Hughes, Michelle M; Englund, Janet A; Kuypers, Jane; Tielsch, James M; Khatry, Subarna K; Shrestha, Laxman; LeClerq, Steven C; Steinhoff, Mark; Katz, Joanne
Title: Population-Based Pertussis Incidence and Risk Factors in Infants Less Than 6 Months in Nepal Document date: 2017_3_1
ID: 0pymqxwq_31
Snippet: Although cough, difficulty breathing, and cough with vomit were the most common symptoms, no symptom was present in all B pertussis cases. During an epidemic period in Washington state, among infants <1 year, who had a minimum of 14 days cough plus an additional symptom, 82% had posttussive emesis, 29% had apnea, 26% had whoop, and 42% had cyanosis [32] . A study of US neonates with pertussis showed the symptom prevalence to be 97% for cough, 91%.....
Document: Although cough, difficulty breathing, and cough with vomit were the most common symptoms, no symptom was present in all B pertussis cases. During an epidemic period in Washington state, among infants <1 year, who had a minimum of 14 days cough plus an additional symptom, 82% had posttussive emesis, 29% had apnea, 26% had whoop, and 42% had cyanosis [32] . A study of US neonates with pertussis showed the symptom prevalence to be 97% for cough, 91% for cyanosis, 58% for apnea, and 3% for fever [34] . Our study found lower or equal symptom prevalence with the exception of fever. Fever prevalence was higher in our study, similar to that found in Peru [29] .
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