If a red line starts developing up from a knife polk and you don.t notice for a couple of days and then go directly to a hospital where they give you an IV and every day after that for five days, does it likely mean you will be ok? The red line dissapeared after the first injection. No other symptons are present. This happened to my 36 year old son when was filletting a fish and I am so worried about it. Hope you can put my mind to rest. Thanks