Generations have been changed. Technology has been modernized. But we find many diseases which are not even thought to be existing. The climate and enivironment is such disastrically affecting the human health that many serious concerns are being emerging these days throughout the world.
Though the feild of medicine is much advanced these days, there is no that stratigical change seen in curing these viral diseases.
Let's check such symptoms in order to be sure that we are infected with such viral diseases which are affecting our immune system.