A investigation of a student brucellosis case in Ningde City of Fujian Province / 中华地方病学杂志

ABSTRACT

Objective To clarify the source of infection of a student brucellosis case in Ningde City, make clear its influencing range as well as risk factors of transmission, then take measures to effectively control the epidemic.Methods Clue sampling was carried out, then the survey site village was chosen where the student case came from.①Fundamental state survey resident population as well as the situation of livestock were collected.②Human outbreak investigation detailed interview was carried out on the first case.Base on the principle of informed consent, serum samples were collected from breeders and those who had once contacted with sheep in order to detect brucellosis antibodies, then investigation was conducted on farmers to collect cognitive information;case searching was conducted by reviewing outpatient and inpatient records as well as government broadcasting.③Livestock epidemic serum samples from some of the sheep were collected by agricultural sector.Results There were 200 households with 500 inhabitants in the survey site of Ningde City, among which there were 5 sheep feeding families and totally 154 sheep on hand.Patient was male, 12 years old, student.Sick on June 2nd, 2014,confirmed on July 5th.The patient's neighbor was a sheep farmer, he had once contacted with the sheep.Totally we collected 8 serum samples from livestock personnel, positive Brucella antibody was 4, with a positive rate 50％ (4/8);collected 15 serum samples from those contacted with sheep, positive Brucella antibody was 2, with a positive rate 13％ (2/15).Meanwhile, agricultural sector collected 17 sheep serum samples from these two sheep farms, among which there were 7 serum samples showing a positive Brucella antibodies, with a positive rate 41％ (7/17).After surveyed of 8 livestock breeding personnel and 15 livestock non-breeding personnel, we found that no one was familiar with the clinical characteristics and transmission of brucellosis.Conclusions The direct source of brucellosis infection is local infected sheep, general population has been involved in this epidemic.Brucellosis surveillance should be seriously carried out on both human and animal.Furthermore, improving the awareness of brucellosis among professionals as well as general population is eagerly needed and health education must be carried out immediately.