@article{90928b70a757407190380f059ffbb512,
title = "An epidemiological study of Streptococcus suis prevalence among swine at industrial swine farms in Northern Vietnam",
abstract = "Introduction: Streptococcus suis is a zoonotic pathogen found in swine that may cause systemic infection in humans. S. suis is endemic in Southeast Asia and is the leading cause of adult meningitis in Vietnam. Given Vietnam's increasing centralization of the swine industry, we sought to estimate the prevalence of S. suis on large swine farms in Northern Vietnam. Methods: A cross-sectional, one-health-oriented, surveillance study for S. suis was conducted between October 2019–March 2020. Swine oral, swine worker nasal, and bioaerosol samples were collected from four large-scale swine farms (>500 swine) in three provinces in Northern Vietnam: Lao Cai, Bac Giang, and Quang Ninh. Samples were evaluated for presence of S. suis growth on blood agar plates and confirmed with conventional polymerase chain reaction. Results: The authors found that 4/174 (2.3%, 95% CI: 0.6–5.8%) of swine oral samples and 1/58 (1.7%, 95% CI: 0–9.2%) bioaerosol samples were positive for S. suis by bacterial culture and conventional PCR. S. suis was not detected in any swine worker nasal wash samples. There was no significant relationship between sampling location and month of sample collection with results of swine oral or bioaerosol samples. Conclusion: Compared to previous reports from slaughterhouses in Vietnam, the lower than expected prevalence of S. suis, supports the notion that that recent efforts to centralize Vietnam's pork industry through establishment of large-scale farms with better biosecurity may have been effective in limiting S. suis prevalence on these large farms.",
keywords = "Bioaerosol, Streptococcus suis, Swine, Swine farms, Swine workers",
author = "Nguyen, {Nguyen Thao Thi} and Luu, {Yen Thi Hai} and Hoang, {Trung Duc} and Nguyen, {Huyen Xuan} and Dao, {Tung Duy} and Bui, {Vuong Nghia} and Gray, {Gregory C.}",
note = "Funding Information: This study was supported by Professor Gray's Duke Global Health Institute discretionary funding, as well as funding from the Duke Global Health Institute . We thank all of the staff at the National Institute of Veterinary Research (NIVR), particularly the bacteriology and virology departments, who provided logistical support, technical guidance and laboratory space for this study. We are grateful to the local departments of animal health—including those in Lao Cai, Bac Giang, and Quang Ninh provinces—for their role in facilitating our relationships with local swine farms and their overall support of this research. We also thank the Duke One Health team including Drs. Emily Bailey and Hayden Hedman for their assistance in ordering supplies and transporting them to Vietnam along with Laura Borkenhagen for her with assistance with obtaining IRB approval and project design. Funding Information: This study was supported by Professor Gray's Duke Global Health Institute discretionary funding, as well as funding from the Duke Global Health Institute. We thank all of the staff at the National Institute of Veterinary Research (NIVR), particularly the bacteriology and virology departments, who provided logistical support, technical guidance and laboratory space for this study. We are grateful to the local departments of animal health?including those in Lao Cai, Bac Giang, and Quang Ninh provinces?for their role in facilitating our relationships with local swine farms and their overall support of this research. We also thank the Duke One Health team including Drs. Emily Bailey and Hayden Hedman for their assistance in ordering supplies and transporting them to Vietnam along with Laura Borkenhagen for her with assistance with obtaining IRB approval and project design. Publisher Copyright: {\textcopyright} 2021",
year = "2021",
month = dec,
doi = "10.1016/j.onehlt.2021.100254",
language = "English (US)",
volume = "13",
journal = "One Health",
issn = "2352-7714",
publisher = "Elsevier BV",
}