Under Special Campaign 4, pest control has been done at the IRCTC Zonal Office, Kolkata. <nis:link nis:type=tag nis:id=SwachhataPakhwada2024 nis:value=SwachhataPakhwada2024 nis:enabled=true nis:link/> <nis:link nis:type=tag nis:id=IRSpecialCampaign4 nis:value=IRSpecialCampaign4 nis:enabled=true nis:link/> <nis:link nis:type=tag nis:id=SwachhBharat nis:value=SwachhBharat nis:enabled=true nis:link/>