Design and operation of torpedo tubes installed on German U-Boats during WWII did not differ greatly from other such designs in the world. They used pressurized air to launch the torpedo and automatic venting after the launch.
These quarantinable diseases include cholera, diphtheria, infectious tuberculosis, plague, smallpox, yellow fever, viral hemorrhagic fevers, severe acute respiratory syndrome, and influenza caused by novel or reemerging influenza viruses that are causing or have the potential to cause a pandemic.
Introduction to preventable and curable diseases. Malaria, HIV/AIDS, TB are all preventable and treatable diseases. By the end of 2012, 4.2 million people are receiving treatment for HIV/AIDS, 9.7 million new cases of TB are being treated, 310 million nets have been distributed to protect families from Malaria.