PMID- 23065394
OWN - NLM
STAT- MEDLINE
DCOM- 20130822
LR  - 20211021
IS  - 1573-7438 (Electronic)
IS  - 0049-4747 (Linking)
VI  - 45
IP  - 3
DP  - 2013 Mar
TI  - Porcine reproductive and respiratory syndrome virus detection in Thailand during 
      2005-2010 in relation to clinical problems, pig types, regions, and seasons.
PG  - 771-9
LID - 10.1007/s11250-012-0288-9 [doi]
AB  - The objectives of the present study were to determine the prevalence of porcine 
      reproductive and respiratory syndrome virus (PRRSV) in Thailand between 2005 and 
      2010. The study was conducted by retrospectively investigating the detection of 
      PRRSV from different pig types including boars, sows, piglets, nursery pigs, and 
      fattening pigs from six regions of Thailand, i.e., the northern, eastern, 
      northeastern, central, western, and southern parts. The data were obtained from 
      cases submitted to the Chulalongkorn University Veterinary Diagnostic Laboratory 
      for PRRSV detection between 2005 and 2010. Frequency analyses and generalized 
      linear models were used to evaluate the prevalence of PRRSV in relation to 
      various factors. In total, 2,273 tissues (n = 636), semen (n = 210) and serum 
      (n = 1,427) samples were included. PRRSV was detected in 32.6 % (740/2,273) of 
      the pigs. The virus was found in 43.1 %, 15.7 %, and 30.3 % in the tissues, 
      semen, and serum samples, respectively (P < 0.001). The prevalence of PRRSV was 
      highest in 2005 (43.6 %) and lowest in 2009 (23.6 %) (P < 0.001). The prevalence 
      of PRRSV was highest in nursery pigs (43.7 %) and lowest in boars (15.4 %) 
      (P < 0.001). The prevalence of PRRSV in the hot season (34.9 %) was higher than 
      that found in the cool season (28.1 %, P = 0.018) but did not differ 
      significantly compared to rainy season (34.0 %, P = 0.486). The strain of PRRSV 
      isolated in the present study was genotype 2 (54.5 %), genotype 1 (31.0 %), and 
      mixed genotypes (14.5 %). It can be concluded that PRRSV was detected in the 
      tissue samples more frequently than the semen and serum samples. The prevalence 
      of PRRSV was high in the nursery pigs. A high prevalence of PRRSV was found in 
      the hot season, indicating that climatic factors may also contribute to the 
      prevalence of PRRSV in Thailand. Of all the PRRSV detected, 31.0 %, 54.5 %, and 
      14.5 % belonged to genotype 1, genotype 2, and mixed genotypes, respectively.
FAU - Tummaruk, Padet
AU  - Tummaruk P
AD  - Faculty of Veterinary Science, Department of Obstetrics, Gynecology and 
      Reproduction, Chulalongkorn University, Bangkok, Thailand 10330. 
      Padet.t@chula.ac.th
FAU - Surapat, Pannin
AU  - Surapat P
FAU - Sriariyakun, Sutharat
AU  - Sriariyakun S
FAU - Seemakram, Oraphan
AU  - Seemakram O
FAU - Olanratmanee, Em-on
AU  - Olanratmanee EO
FAU - Tantilertcharoen, Rachod
AU  - Tantilertcharoen R
FAU - Thanawongnuwech, Roongroj
AU  - Thanawongnuwech R
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20121013
PL  - United States
TA  - Trop Anim Health Prod
JT  - Tropical animal health and production
JID - 1277355
RN  - 0 (RNA, Viral)
SB  - IM
MH  - Animals
MH  - Female
MH  - Male
MH  - Phylogeny
MH  - Porcine Reproductive and Respiratory 
      Syndrome/*epidemiology/microbiology/*physiopathology
MH  - Porcine respiratory and reproductive syndrome virus/*genetics/isolation & 
      purification
MH  - Prevalence
MH  - RNA, Viral/blood
MH  - Retrospective Studies
MH  - Reverse Transcriptase Polymerase Chain Reaction/veterinary
MH  - Seasons
MH  - Sequence Analysis, RNA/veterinary
MH  - Swine
MH  - Thailand/epidemiology
EDAT- 2012/10/16 06:00
MHDA- 2013/08/24 06:00
CRDT- 2012/10/16 06:00
PHST- 2012/10/05 00:00 [accepted]
PHST- 2012/10/16 06:00 [entrez]
PHST- 2012/10/16 06:00 [pubmed]
PHST- 2013/08/24 06:00 [medline]
AID - 10.1007/s11250-012-0288-9 [doi]
PST - ppublish
SO  - Trop Anim Health Prod. 2013 Mar;45(3):771-9. doi: 10.1007/s11250-012-0288-9. Epub 
      2012 Oct 13.