VACCINE AGAINST HIGHLY PATHOGENIC REPRODUCTIVE RESPIRATORY PIG SYNDROME (HP PRRS)

摘要

1. A method for vaccinating a pig against exposure to a high-temperature form of PRRS, which method comprises administering to a pig an immunogenic composition comprising an effective amount of type II PRRS virus. ! 2. The method according to claim 1, wherein the high-temperature form of PRRS is caused by a Chinese strain of PRRSV, which has a nucleotide sequence homologous to at least 95% of the nucleotide sequence of strain HB-1 or JX143. ! 3. The method according to claim 1, wherein the high-temperature form of PRRS is caused by the HP PRRS virus. ! 4. The method according to claim 1, wherein the type II PRRS virus is attenuated. ! 5. The method according to claim 3, characterized in that the PRRS type II virus is a weakened form of the strain, which has a registration number ATCC VR-2332, or its offspring. ! 6. The method according to claim 4, characterized in that the PRRS type II virus is a strain that has a registration No.ATCC VR-2495, or its offspring. ! 7. The method according to claim 1, in which the Chinese strain of PRRSV is selected from the group comprising AN-1; AHCFSH; AHCFZC; BB07; BD-8; BQ07; CL07; CX07; CZ07; FY060915; FY080108; GC-2; GCH-3; GDI Gd2; GD2007; Gd3; Gd4; GDSD1; GDY1-2007; GDY2-2007; GDYF1; GS2008; GXHZ12; GXHZ13; GXHZ14; GXHZ16; GXHZ19; GXHZ2; GXHZ21; GXHZ4; GXLZ5; GXLZ7; GY; GZCJ; Gzdj; GZHW1; GZHW2; Ghx; Gzjs; GZKB; Gzky; GZLJ1; GZWB; GZWM; GZZB; Hainan-1; Hainan-2; HB1; HB2; HB3; HB-Tsh1; HB-Xt1; HEN46; HeN-KF; HeN-LH; HeN-LY; HLJDF; HLJMZ1; HLJMZ2; HLJMZ3; Hljzy; HM-1; HN2; HN2007; HN3; HN1d; HNly; HNLY01; HNNX01; HNPJ01; HNsp; HNXT1; HNyy; HNyz; HQ-5; HQ-6; HUB HuN; HUN1; HUN11; HUN15; HUN16; HUN17; HUN2; HUN3; HUN4; HUN5; HUN6; HUN7; Hunan-1; Hunan-2; Hunan-3; HUNH2; HUNH4; HuNh1; HUNL1; HUNX4; HZ061226; HZ070105; Jiangsu-1; Jiangsu-2; Jiangsu-3; Jiangxi-2; Jiangxi-4; JLYS; JN; JX1; JX143; JX2; JX-2; JX2006; JX3; JX4; JX5; JXA1; KS06; LC07; LJ; LS06; LS-4; LY07; NB070319; SC07; SD; SD14; SDWF2; SH02; ST-7; SX2007; SY0608; TJDMJ; TJJJJ2; TJJHJ3; TQ; TQ07; TW07; WF07; XJ07; XL2008; YN2008; YNBS; YNDL; YNMG; YNWS; YNYS; YNYX1; YNYX3; ZJ06; ZJCJ; ZJWL; ZX07 and ZS070921. ! 8. The method according to claims 1 to 7, in which the composition also contains an adjuvant. ! 9. How