How to report seasonal products such as flu vaccines in IRIS

A question was raised internally about how to manage things like flu vaccines which are seasonal.  Usually these are only manufactured at specific time periods, and then the shelf life is very short (for example 6 weeks), so supply naturally runs out in Jan\Feb\March.  This isnt really a supply shortage or a cessation, it is just the natural ebb and flow of a seasonal product.
 

There is no need to report the launch of a new strain each year. The first time that the product is launched needs to be reported (when the initial MAA was first launched), but the cessation only needs to be reported if the company decides to take it out of the market at some point, or not to apply for a new strain in a given year. It is understood that this is a seasonal product.