third test

Surely, communicable diseases in recent decades have decreased significantly and unevenly in many countries of the world. The death rates from communicable diseases are much lower than they were a century ago, thanks to a group of medical breakthroughs such as vaccines and antibiotics, improving general and personal hygiene, disinfection of drinking water and safe disposal of wastewater and waste. Recently, problems related to communicable diseases such as the resistance of microbes to multiple antimicrobials and the emergence of completely, previously unknown new viruses such as Zika, Ebola and Marburg or new strains of old known viruses such as influenza have started to emerge. The latest of which was the global pandemic of the Corona virus, which put most health systems in a major predicament and demonstrated the extent of the fragility of these systems, especially those that ignored or under estimated communicable diseases.