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Lepto - Katpau
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<blockquote data-quote="inyati13" data-source="post: 1227214" data-attributes="member: 17767"><p>Katpau:</p><p>In regard to the duration of immunity you inquired about above, please read this edit from the Merck Veterinary Manual.</p><p></p><p><em>Bovine leptospirosis vaccines available in the USA and Canada are pentavalent and contain leptospiral serovars <u>pomona</u>, <u>grippotyphosa</u>, <u>canicola</u>, <u>icterohaemorrhagiae</u>, and <u>hardjo</u>. These vaccines provide good protection against disease caused by each of these serovars, with the possible exception of serovar <u>hardjo</u>. Experimental and field evidence indicates that some traditional 5-way leptospirosis vaccines do not provide good protection from serovar <u>hardjo</u> infection. <strong>New vaccines have been introduced to address this issue</strong>. If a primary goal of a vaccination program is protection of cattle against <u>hardjo</u>, care should be taken in selection of a vaccine product. In general, annual vaccination of all cattle in a closed herd or low incidence area, or twice-yearly vaccination in an open herd or high incidence area, is the most effective approach to control.</em></p><p></p><p>Italic and underline added by edit. Pentavalent means it includes bacterin for five species (or serovars) which are the five underlined above. They are all of the genus, <em>Leptospira.</em> As mentioned about the duration of Pfizer Spirovac VL5 and Big Cheese mentioned about Triangle 10, a least some current vaccines will provide 12 months of protection if the level of titers resulting from the initial vaccination protocols are achieved.</p><p></p><p>I hope you resolve this. I read your last post above. Your concern is obvious. I like to think every calf can be saved.</p></blockquote><p></p>
[QUOTE="inyati13, post: 1227214, member: 17767"] Katpau: In regard to the duration of immunity you inquired about above, please read this edit from the Merck Veterinary Manual. [i]Bovine leptospirosis vaccines available in the USA and Canada are pentavalent and contain leptospiral serovars [u]pomona[/u], [u]grippotyphosa[/u], [u]canicola[/u], [u]icterohaemorrhagiae[/u], and [u]hardjo[/u]. These vaccines provide good protection against disease caused by each of these serovars, with the possible exception of serovar [u]hardjo[/u]. Experimental and field evidence indicates that some traditional 5-way leptospirosis vaccines do not provide good protection from serovar [u]hardjo[/u] infection. [b]New vaccines have been introduced to address this issue[/b]. If a primary goal of a vaccination program is protection of cattle against [u]hardjo[/u], care should be taken in selection of a vaccine product. In general, annual vaccination of all cattle in a closed herd or low incidence area, or twice-yearly vaccination in an open herd or high incidence area, is the most effective approach to control.[/i] Italic and underline added by edit. Pentavalent means it includes bacterin for five species (or serovars) which are the five underlined above. They are all of the genus, [i]Leptospira.[/i] As mentioned about the duration of Pfizer Spirovac VL5 and Big Cheese mentioned about Triangle 10, a least some current vaccines will provide 12 months of protection if the level of titers resulting from the initial vaccination protocols are achieved. I hope you resolve this. I read your last post above. Your concern is obvious. I like to think every calf can be saved. [/QUOTE]
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