The PRRS experts answer – PRRSControl https://prrscontrol.com Tue, 10 Feb 2026 09:07:42 +0000 en-US hourly 1 https://prrscontrol.com/wp-content/uploads/2018/04/favicon-45x45.jpg The PRRS experts answer – PRRSControl https://prrscontrol.com 32 32 Can PRRSV1 Modified-Live vaccines be effective against PRRSV2? https://prrscontrol.com/prrsv1-mlv-effective-againts-prrsv2/ https://prrscontrol.com/prrsv1-mlv-effective-againts-prrsv2/#respond Fri, 23 Jan 2026 13:10:57 +0000 https://prrscontrol.com/?p=27343 Field data from South Korea show that a PRRSV1 modified-live vaccine can reduce piglet mortality and provide cross-protection in herds where PRRSV2 is circulating.

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]]> https://prrscontrol.com/prrsv1-mlv-effective-againts-prrsv2/feed/ 0 Early piglet vaccination with UNISTRAIN® PRRS induces similar neutralizing titres than 3-week-old vaccination https://prrscontrol.com/early_piglet_unistrain_prrs_vaccination/ https://prrscontrol.com/early_piglet_unistrain_prrs_vaccination/#respond Wed, 16 Jul 2025 08:08:16 +0000 https://prrscontrol.com/?p=27186 Laia Aguirre and colleagues¹ assessed the levels of Neutralizing Antibodies (NA) induced by two different PRRS1 Modified Live Vaccines (MLVs) when administered at 3 days of age, compared to vaccination at 3 weeks of age.

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]]> https://prrscontrol.com/early_piglet_unistrain_prrs_vaccination/feed/ 0 Pigs vaccinated with a PRRSV1 MLV developed potent immunity against Japanese PRRSV2 strains https://prrscontrol.com/vaccine-prrsv2-mlv-immunity-japanese-strains/ https://prrscontrol.com/vaccine-prrsv2-mlv-immunity-japanese-strains/#respond Wed, 05 Mar 2025 17:15:13 +0000 https://prrscontrol.com/vaccination-piglets-prrsv-mlv-mortality-copy/ Recently, Salvador Romero and colleagues, assessed the NA and CMI conferred UNISTRAIN® PRRS (PRRSV1 MLV, HIPRA) against the infection by PRRSV2 Japanese strains.

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]]> https://prrscontrol.com/vaccine-prrsv2-mlv-immunity-japanese-strains/feed/ 0 Vaccination of piglets with PRRSV-MLV promotes long-term reduction of mortality in nursery https://prrscontrol.com/vaccination-piglets-prrsv-mlv-mortality/ https://prrscontrol.com/vaccination-piglets-prrsv-mlv-mortality/#respond Mon, 20 Jan 2025 09:03:25 +0000 https://prrscontrol.com/prrsv-pigs-vaccinated-intradermally-copy/ In some regions, colder and wetter months are often perceived as associated with an increased severity of PRRS (Porcine Reproductive and Respiratory Syndrome) outbreaks in pig farms. As a result, certain farms adopt a seasonal vaccination approach, vaccinating piglets against PRRS only during these colder periods. While this strategy may appear cost-effective due to reduced vaccine and labour expenses, it risks undermining the goal of long-term stability within the farm.

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]]> https://prrscontrol.com/vaccination-piglets-prrsv-mlv-mortality/feed/ 0 Enhanced productivity and antibiotic reduction in pigs vaccinated intradermally with a PRRSV1 MLV on a Japanese PRRSV2-positive farm https://prrscontrol.com/prrsv-pigs-vaccinated-intradermally/ https://prrscontrol.com/prrsv-pigs-vaccinated-intradermally/#respond Mon, 04 Nov 2024 11:29:13 +0000 https://prrscontrol.com/impact-prrsv-vaccination-rosalia-strain-copy/ Vaccines can reduce the clinical outcome and productive impact of Porcine Reproductive and Respiratory Syndrome Virus (PRRSV), with two routes of administration available: intramuscular (IM) and intradermal (ID). Our goal was to evaluate the efficacy of two commercial PRRS MLV vaccines - one based on PRRSV1 (UNISTRAIN® PRRS, HIPRA; IM and ID), and another on PRRSV2 (strain VR-2332; IM) - in growing pigs on a Japanese PRRSV2-positive farm.

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]]> https://prrscontrol.com/prrsv-pigs-vaccinated-intradermally/feed/ 0 The impact of PRRSV vaccination over a highly pathogenic strain: the case of Rosalia https://prrscontrol.com/impact-prrsv-vaccination-rosalia-strain/ https://prrscontrol.com/impact-prrsv-vaccination-rosalia-strain/#respond Wed, 09 Oct 2024 06:54:57 +0000 https://prrscontrol.com/productive-economic-prrs-virulence-outbreaks-copy-2/ The emergence of the Rosalia strain has posed a critical question: how effective are current vaccines in controlling outbreaks caused by this highly pathogenic variant?

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]]> https://prrscontrol.com/impact-prrsv-vaccination-rosalia-strain/feed/ 0 Productive and economic impact of two PRRS increased virulence outbreaks within a swine farm in Spain https://prrscontrol.com/productive-economic-prrs-virulence-outbreaks/ https://prrscontrol.com/productive-economic-prrs-virulence-outbreaks/#respond Mon, 29 Jul 2024 07:45:41 +0000 https://prrscontrol.com/evaluation-prrs-piglet-vaccination-nursery-copy/ In the present study we assessed the productive and economic impact of two outbreaks caused by a PRRS strain of increased virulence on a swine farm in Spain.

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]]> https://prrscontrol.com/productive-economic-prrs-virulence-outbreaks/feed/ 0 Evaluation of PRRS piglet vaccination in a multi-origin nursery unit in Spain https://prrscontrol.com/evaluation-prrs-piglet-vaccination-nursery/ https://prrscontrol.com/evaluation-prrs-piglet-vaccination-nursery/#respond Tue, 25 Jun 2024 13:48:12 +0000 https://prrscontrol.com/impact-prrs-positivity-productivity-copy/ In this study, the efficacy of piglet vaccination was assessed in a multi-origin nursery unit in the southeast of Spain.

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]]> https://prrscontrol.com/evaluation-prrs-piglet-vaccination-nursery/feed/ 0 Can PRRSV be transmitted to pigs through the consumption of meat from positive animals? https://prrscontrol.com/pigs-prrsv-consumption-meat-positive-animals/ https://prrscontrol.com/pigs-prrsv-consumption-meat-positive-animals/#respond Mon, 04 Mar 2024 09:00:23 +0000 https://prrscontrol.com/impact-prrs-positivity-productivity-copy/ Regarding meat transmission of PRRS in the fresh meat market from PRRS positive farms: what protocol do countries follow when slaughtering PRRS positive pigs? And how many pigs that are positive still have the antigen within the glands at age of slaughter of 23 weeks?

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]]> https://prrscontrol.com/pigs-prrsv-consumption-meat-positive-animals/feed/ 0 What is the impact of PRRS positivity status on productivity? https://prrscontrol.com/impact-prrs-positivity-productivity/ https://prrscontrol.com/impact-prrs-positivity-productivity/#respond Tue, 13 Feb 2024 08:41:14 +0000 https://prrscontrol.com/needle-free-vaccination-reduce-antibiotics-copy/ Effect of PRRS positivity on productivity within a large integrated pig production system in Europe.

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