Three Leading Private Hospital Chains Begin Inoculating 18-44 Age Groups Against COVID-19 At Select Centres Max Healthcare (@MaxHealthCare/Twitter) Three of the nation's leading private sector hospital chains, Max Healthcare, Fortis Healthcare and Apollo Hospitals have begun the roll-out of vaccination for those aged between 18-44 years today at select centres with limited supplies, reports Economic Times. This gains significance as most state governments have said that they would be unable to start inoculation of 18-45 age group due to unavailability of vaccines. Other private hospital chains have also said that they are facing a shortage of vaccines and would not be able to begin inoculating those in the 18-44 age group for now.