Health Alerts & Infectious Disease Emergencies Health AlertsRead the most recent Health Alerts sent to San Francisco Practitioners. Submit your contact information to receive health alerts. Infectious Disease EmergencyPrepare yourself and your family so that you know what to do when an emergency occurs. Infectious Disease Emergency Response PlanRead San Francisco’s Infectious Disease Emergency Response Plan. Recognizing BioterrorismLearn which diseases have the potential for causing infectious disease emergencies.