I am medical student final year mbbs .my. Tt history followed by 6 dose before 3 years . And last 27 December. So I posted, Dr. Pandian MS only advice to take the tt shot . I go to community medicine they said , How much u take does not matter. But if you take systematic 0,1 months , 6 months with proper cold chain then the validity 5 years. But I have not taken thus rule . Also said, In india no garuntee of cold chain . Don't know the stats of previous vaccination of temparature. So better to take And followed the schedule. Is this right?