With ref to the first part of post , De-weerd is a man with a product to sell , ( parastop ) is this the reason he does not advocate a vacc plan for paratypoid ?
De-weerd , has found himself in Court more that once with ref to his his product's , the last time he was on the verge of 3 month's inside along with the heavy fine's + cost's . He incurred .
On the subject of vacc fo paratypoid . i think the fancy has come to a x road's , devil you do , devil you don't , I will not condem a fancier for having a vacc plan , or not having one , that is their CHOICE untill the power's that be decide otherwise . If it is your choice to vacc , at least give a pre-treatment to clean out any underlying thing's that maybe hidden , this is the only way to reduce the risk of an adverse reaction to the vacc , your VET will advise on the type of pre-treatment , or go Blind , which many fancier's have to do, as they have no access to an Avain Vet .
( YOUR CHOICE )