An epidemiological study of Haemophilus influenzae at a Brazilian day care center
Day care centers are a relatively new phenomenon in Brazil that bring together large numbers of young children susceptible to contagious diseases. Haemophilus influenzae (Hi) is an important infection in the age range of those attending day care centers. In the present study, the carriage rate of Ha...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
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| Series: | Brazilian Journal of Infectious Diseases |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702001000500004&lng=en&tlng=en |
| _version_ | 1811336966477709312 |
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| author | M.E. Bonifácio da Silva J.M. Marin |
| author_facet | M.E. Bonifácio da Silva J.M. Marin |
| author_sort | M.E. Bonifácio da Silva |
| collection | DOAJ |
| description | Day care centers are a relatively new phenomenon in Brazil that bring together large numbers of young children susceptible to contagious diseases. Haemophilus influenzae (Hi) is an important infection in the age range of those attending day care centers. In the present study, the carriage rate of Haemophilus influenzae was identified in 38 day care attendees age 6 to 37 months, and 23 staff members, at a day care center in Ribeirão Preto-São Paulo, in 1997. To identify the carriers, two nasopharyngeal swabs were collected; one in July and one in December. The rate of H. influenzae carriers among the children was 77%. Only 2 of 23 staff members (9%) had Hi. Among the children, there were 58 isolates in the two sampling periods; 6 of the Hi were serotype b, 1 was serotype e, and 48 isolates were non-typeable. Two were identified as H. parainfluenzae. One adult had a non-typeable Hi and 1 had H. paraphrohaemolyticus. Three of the 6 children with type B had received a conjugate vaccine against H. influenzae type b, but they still carried this bacterium in the nasopharynx (50%). Forty ribotype patterns were found among the isolates, showing a high exchange rate of nontypeable H. influenzae carriers. The results indicate that, because of the high and changing biotype of Hi carriage, day care centers should be carefully monitored as potential point source of HI disease in the community. |
| first_indexed | 2024-04-13T17:47:14Z |
| format | Article |
| id | doaj.art-b2ed888aaf7c46fd8763ccf2d8d39faa |
| institution | Directory Open Access Journal |
| issn | 1678-4391 |
| language | English |
| last_indexed | 2024-04-13T17:47:14Z |
| publisher | Elsevier |
| record_format | Article |
| series | Brazilian Journal of Infectious Diseases |
| spelling | doaj.art-b2ed888aaf7c46fd8763ccf2d8d39faa2022-12-22T02:36:53ZengElsevierBrazilian Journal of Infectious Diseases1678-43915526026810.1590/S1413-86702001000500004S1413-86702001000500004An epidemiological study of Haemophilus influenzae at a Brazilian day care centerM.E. Bonifácio da Silva0J.M. Marin1Universidade de São PauloUniversidade de São PauloDay care centers are a relatively new phenomenon in Brazil that bring together large numbers of young children susceptible to contagious diseases. Haemophilus influenzae (Hi) is an important infection in the age range of those attending day care centers. In the present study, the carriage rate of Haemophilus influenzae was identified in 38 day care attendees age 6 to 37 months, and 23 staff members, at a day care center in Ribeirão Preto-São Paulo, in 1997. To identify the carriers, two nasopharyngeal swabs were collected; one in July and one in December. The rate of H. influenzae carriers among the children was 77%. Only 2 of 23 staff members (9%) had Hi. Among the children, there were 58 isolates in the two sampling periods; 6 of the Hi were serotype b, 1 was serotype e, and 48 isolates were non-typeable. Two were identified as H. parainfluenzae. One adult had a non-typeable Hi and 1 had H. paraphrohaemolyticus. Three of the 6 children with type B had received a conjugate vaccine against H. influenzae type b, but they still carried this bacterium in the nasopharynx (50%). Forty ribotype patterns were found among the isolates, showing a high exchange rate of nontypeable H. influenzae carriers. The results indicate that, because of the high and changing biotype of Hi carriage, day care centers should be carefully monitored as potential point source of HI disease in the community.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702001000500004&lng=en&tlng=enHaemophilus influenzaeday carecolonization |
| spellingShingle | M.E. Bonifácio da Silva J.M. Marin An epidemiological study of Haemophilus influenzae at a Brazilian day care center Brazilian Journal of Infectious Diseases Haemophilus influenzae day care colonization |
| title | An epidemiological study of Haemophilus influenzae at a Brazilian day care center |
| title_full | An epidemiological study of Haemophilus influenzae at a Brazilian day care center |
| title_fullStr | An epidemiological study of Haemophilus influenzae at a Brazilian day care center |
| title_full_unstemmed | An epidemiological study of Haemophilus influenzae at a Brazilian day care center |
| title_short | An epidemiological study of Haemophilus influenzae at a Brazilian day care center |
| title_sort | epidemiological study of haemophilus influenzae at a brazilian day care center |
| topic | Haemophilus influenzae day care colonization |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702001000500004&lng=en&tlng=en |
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