Meraj over 7 years ago

Typhoid fever cause and treatment | background of mary mallon

Typhoid fever cause and treatment and history of mary mallon. who spreads typhoid causative agent. Disclaimer : The information provided on this channel and its videos for general purposes only and should not be considered as professional advice. we are not a licensed or a medical practitioner so always consult professional help. The content published on this our own creative work protected under copyright law.