PMID- 35202333
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20220301
IS  - 2306-7381 (Electronic)
IS  - 2306-7381 (Linking)
VI  - 9
IP  - 2
DP  - 2022 Feb 14
TI  - First Study to Describe the Prevalence of Porcine Reproductive and Respiratory 
      Syndrome Virus and Porcine Circovirus Type 2 among the Farmed Pig Population in 
      the Hong Kong Special Administrative Region.
LID - 10.3390/vetsci9020080 [doi]
LID - 80
AB  - Infection of pig farms with porcine reproductive and respiratory syndrome virus 
      (PRRSV) and porcine circovirus type 2 (PCV2) causes substantial economic losses 
      globally. However, little epidemiological data of PRRSV and PCV2 in the Hong Kong 
      Special Administrative Region (HKSAR) were available. This pilot study aimed to 
      provide baseline information of the prevalences of PPRSV and PCV2 in the HKSAR. A 
      complex survey was conducted from 3 February 2020 to 11 March 2021 on 29 of the 
      40 pig farms in the HKSAR, with five pigs each from seven age groups 
      (representing key production stages) tested using a real-time PCR. Evidence of 
      presence of PRRSV European strain (PRRSV-1), PRRSV North American strain 
      (PRRSV-2) and PCV2 was confirmed on 48%, 86% and 79% of farms, with overall 
      prevalences of 7.6% (95% CI: 4.8-10.3%), 12.2% (95% CI: 9.6-14.7%) and 20.3% (95% 
      CI: 14.3-26.2%) in the HKSAR pig population based on pooling results from all 
      pigs across all farms. PRRSV-1 and PRRSV-2 were more prevalent in younger pigs, 
      with the highest prevalences of 32.1% (95% CI: 20.8-45.0%) and 51.5% (95% CI: 
      38.9-64.0%) for 8-week-old pigs. In contrast, the distribution of PCV2 prevalence 
      across age groups appeared to be more symmetrical, with higher prevalences 
      reported in pigs from 12 weeks old to 24 weeks old but lower prevalences in 
      younger pigs and sows. The results of this study demonstrate that PRRSV-1, 
      PRRSV-2 and PCV2 are widely spread across pig farms in the HKSAR, which indicates 
      that the current farm management and control protocols should be improved. We 
      recommend the implementation of on-farm intervention strategies combined with 
      ongoing surveillance to reduce these viruses, and their consequences, in the 
      HKSAR pig population.
FAU - Flay, Kate J
AU  - Flay KJ
AUID- ORCID: 0000-0003-3770-3765
AD  - Department of Veterinary Clinical Sciences, City University of Hong Kong, Kowloon 
      999077, Hong Kong SAR, China.
FAU - Yang, Dan A
AU  - Yang DA
AUID- ORCID: 0000-0003-3893-9403
AD  - Centre for Applied One Health Research and Policy Advice, City University of Hong 
      Kong, Kowloon 999077, Hong Kong SAR, China.
AD  - College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, 
      China.
FAU - Choi, Sze Chun
AU  - Choi SC
AD  - Centre for Applied One Health Research and Policy Advice, City University of Hong 
      Kong, Kowloon 999077, Hong Kong SAR, China.
FAU - Ip, Joyce
AU  - Ip J
AUID- ORCID: 0000-0003-0397-6044
AD  - Centre for Applied One Health Research and Policy Advice, City University of Hong 
      Kong, Kowloon 999077, Hong Kong SAR, China.
FAU - Lee, Song H
AU  - Lee SH
AUID- ORCID: 0000-0002-9704-9745
AD  - Centre for Applied One Health Research and Policy Advice, City University of Hong 
      Kong, Kowloon 999077, Hong Kong SAR, China.
FAU - Pfeiffer, Dirk U
AU  - Pfeiffer DU
AUID- ORCID: 0000-0001-7000-0530
AD  - Centre for Applied One Health Research and Policy Advice, City University of Hong 
      Kong, Kowloon 999077, Hong Kong SAR, China.
AD  - Department of Infectious Diseases and Public Health, City University of Hong 
      Kong, Kowloon 999077, Hong Kong SAR, China.
LA  - eng
GR  - SADF 0009 - "Improving Pig Health and Production in Hong Kong"/Sustainable 
      Agricultural Development Fund under the Agriculture, Fisheries and Conservation 
      Department of the Government of the HKSAR/
PT  - Journal Article
DEP - 20220214
PL  - Switzerland
TA  - Vet Sci
JT  - Veterinary sciences
JID - 101680127
PMC - PMC8874621
OTO - NOTNLM
OT  - complex survey
OT  - design-based approach
OT  - porcine circovirus type 2 (PCV2)
OT  - porcine reproductive and respiratory syndrome virus (PRRSV)
OT  - prevalence
OT  - real-time PCR
COIS- The authors declare that the research was conducted in the absence of any 
      commercial or financial relationships that could be construed as a potential 
      conflict of interest.
EDAT- 2022/02/25 06:00
MHDA- 2022/02/25 06:01
PMCR- 2022/02/14
CRDT- 2022/02/24 17:21
PHST- 2022/01/13 00:00 [received]
PHST- 2022/02/11 00:00 [revised]
PHST- 2022/02/11 00:00 [accepted]
PHST- 2022/02/24 17:21 [entrez]
PHST- 2022/02/25 06:00 [pubmed]
PHST- 2022/02/25 06:01 [medline]
PHST- 2022/02/14 00:00 [pmc-release]
AID - vetsci9020080 [pii]
AID - vetsci-09-00080 [pii]
AID - 10.3390/vetsci9020080 [doi]
PST - epublish
SO  - Vet Sci. 2022 Feb 14;9(2):80. doi: 10.3390/vetsci9020080.