Will the disease strike again after a bout of high fever disease?

In August there was an outbreak of high fever disease. Now some finishing pigs are showing fever again. I do not know whether it is high fever disease with runny nose.
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Heh, generally it will not happen again, but you must confirm whether the symptoms before and this time are the same.
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Last time the signs were also that finishing pigs first developed fever, and after injection the fever subsided and then rose again, with runny nose, redness of the body, and then it spread to sows causing miscarriage, piglets dying, and the ears and the rump turning purple.
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It happens often, so you must not be careless.
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If the pigs have had the disease before, they generally will not get high fever again.
But if it is another batch of pigs, then it is possible for them to get it again.