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City of Santa Ana Emergency Operations Plan <br />Part I Basic Plan <br />Humans become infected with the virus when they inhale aerosol particles contaminated from deer mouse fecal <br />pellets (droppings) and urine. The two strains of Hantaviruses encountered locally are the Sin Nombre Virus <br />(SNV) and El Morro Canyon Virus. Although these strains have been found in local deer mice, no residents have <br />been diagnosed with Hantavirus in Orange County. The deer mouse is widely distributed in neighborhoods of <br />Orange County that border natural areas. <br />Novel Emerging Pathogens <br />With advances in travel, diseases can quickly spread throughout the world. Orange County, with its diverse <br />population and large tourism industry, is particularly at risk for importation of diseases that may previously have <br />been localized to other countries or continents. These diseases pose a significant hazard if they are highly <br />transmissible from person to person and if they have significant morbidity or mortality. In the past decade, <br />agencies have prepared to respond to multiple such diseases such as Severe Acute Respiratory Syndrome (SARS), <br />avian influenza H5N1, Middle East Respiratory Syndrome Coronavirus (MERS-CoV) and the Ebola Virus. The <br />threat of a novel or emerging communicable disease appearing locally, with little or no immunity in the population <br />and no known vaccinations or effective medical treatment methods, can have a devastating effect, spreading <br />rapidly through the population with little treatment available. <br />In December 2019, health officials in Wuhan, China began to observe an unusual number of severe cases of <br />pneumonia with no obvious cause. These were identified as a novel form of coronavirus (a family of viruses that <br />attack the body's respiratory system), specifically identified as Severe Acute Respiratory Syndrome Coronavirus <br />2 (SARS-CoV-2), and became familiarly known as COVID-19, short for Coronavirus Disease 2019. Symptoms <br />of COVID-19 vary but primarily include fever, cough, fatigue, difficulty breathing and loss of taste or smell. The <br />disease is primarily spread when an infected person breathes, talks, coughs, sneezes, or otherwise expels infected <br />droplets of moisture from their respiratory system and these droplets are inhaled by the next person. <br />Most people who contract the virus (approximately 80%) experience mild to moderate symptoms, up to a mild <br />case of pneumonia. Others, particularly older patients or those with pre-existing medical conditions, experience <br />severe symptoms requiring hospitalization and intensive medical care, and approximately 2-3% of patients do not <br />survive the disease. <br />The World Health Organization declared COVID a worldwide pandemic on March 11, 2020. The disease spread <br />exponentially throughout the world, reaching all countries and populations in various waves and surges. Within <br />one year of that date, there were more than 118 million cases and 2.6 million deaths worldwide; 29 million cases <br />and 530,000 deaths in the United States; 3.6 million cases and 54,000 deaths in California; 248,000 cases and <br />4,300 deaths in Orange County; and 44,000 cases and 770 deaths in the City of Santa Ana. This makes COVID- <br />19 one of the longest and deadliest natural disasters in modern history, both locally and throughout the world. <br />COVID-19 cases overwhelmed hospitals and healthcare systems throughout the world, resulting in overcrowded <br />hospitals and rationing of medical supplies and medical care. In response to the spread of the disease, health and <br />government officials issued orders to close or significantly reduce the capacity of schools and businesses, restrict <br />public gatherings or travel, to stay at home except for essential needs, and requiring persons to wear face coverings <br />to prevent the sharing of exhaled air. These orders resulted in significant economic hardship and loss of jobs as <br />businesses closed and commercial activity slowed, and in many cases were met with civil disobedience or other <br />refusal to cooperate with public health measures. <br />94 <br />