COVID-19 vaccination mandate is being implemented at General Dynamics Land Systems — Canada (GDLS), the military defence contractor told employees in a memo on Tuesday.The mandate is coming in response to a change in guidance on vaccines from the province and from the Middlesex-London Health Unit, the memo says.“Businesses like ours are now required to establish a mandatory vaccination policy to promote vaccine uptake as the single most effective measure of protecting workers in the workplace,” the memo, obtained by 980 CFPL, states.“Vaccination is one of the most effective ways to protect your health.