COVID-19: On the Disparity in Outcomes Between Military and Civilian Populations

ABSTRACT Introduction The CoronaVirus Disease 2019 (COVID-19) pandemic remains a formidable threat to populations around the world. The U.S. Military, in particular, represents a unique and distinguishable subset of the population, primarily due to the age and gender of active duty personnel. Current investigations have focused on health outcome forecasts for civilian populations, making them of limited value for military planning. Materials and Methods We have developed and applied an age-structured susceptible, exposed, infectious, recovered, or dead compartmental model for both civilian and military populations, driven by estimates of the time-dependent reproduction number, R(t), which can be both fit to available data and also forecast future cases, intensive care unit (ICU) patients, and deaths. Results We show that the expected health outcomes for active duty military populations are substantially different than for civilian populations of the same size. Specifically, while the number of cases is not expected to differ dramatically, severity, both in terms of ICU burdens and deaths, is substantially lower. Conclusions Our results confirm that the burden placed on military health centers will be substantially lower than that for equivalent-sized civilian populations. More practically, the tool we have developed to investigate this (https://q.predsci.com/covid19/) can be used by military health planners to estimate the resources needed in particular locations based on current estimates of the transmission profiles of COVID-19 within the surrounding civilian population in which the military installation is embedded. As this tool continues to be developed, it can be used to assess the likely impact of different intervention strategies, as well as vaccine policies; both for the current pandemic as well as future ones.

Travel Related Risk Behaviors and Antibiotic Use among Older Travelers

Background Antibiotic stewardship in the pre-travel care of older adults is important to effectively treat infections while minimizing harm from side effects and unnecessary antibiotic use. The objective of this study was to compare the characteristics, risk behaviors, infectious diseases and antibiotic use between older (≥ 60 years) and younger (18-59 years) travelers. Methods TravMil is a prospective, observational cohort of United States Department of Defense beneficiaries traveling outside the continental US for ≤ 6.5 months. For this analysis, we included adults enrolled pre-travel between January 2010–August 2018 and excluded active duty personnel on deployment. Pre- and post-travel surveys captured trip characteristics, exposures, illnesses, and antibiotic use. Results 1742 travelers were analyzed: 747 (42.9%) were ≥ 60 years and 995 (57.1%) were 18-59 years. Older travelers were less likely to engage in high-risk dietary behaviors and experience travelers’ diarrhea than younger travelers (18.2% vs 22.9%; p<0.05). Influenza-like illnesses (12.5%) and febrile illness (3.4%) occurred less frequently in the older cohort. Antibiotic use for self treatment was common in both age groups (25.7% vs. 26.7%) and often inappropriate e.g. for treatment of occasional loose stool or mild travelers’ diarrhea (older adults 67.0% [67/100] vs. younger adults 57.6% [83/144]; p <0.05), and influenza-like illnesses (63.4% [64/101] vs. 58.6% [68/116]; p<0.05). Conclusions Older travelers were less likely to engage in high-risk behaviors and experience travelers’ diarrhea, and both age groups experienced mild, self-limited infections. Inappropriate use of antibiotics was common, suggesting that antimicrobial stewardship should be emphasized at pre-travel counseling with international travelers.

Characteristics, Treatment, and Outcomes of Patients With Severe or Life-threatening COVID-19 at a Military Treatment Facility—A Descriptive Cohort Study

ABSTRACT Introduction The treatment of severe and life-threatening COVID-19 is a rapidly evolving practice. The purpose of our study was to describe the characteristics and outcomes of patients with severe or life-threatening COVID-19 who present to a Military Treatment Facility (MTF) with an emphasis on addressing institutional adaptations to rapidly changing medical evidence. Materials and Methods A single-center retrospective study conducted on a prospectively maintained cohort. The MTF is a 52-bed hospital within an urban setting. Patients were included in the cohort if they had laboratory-confirmed severe or life-threatening COVID-19 with positive SARS-CoV-2 reverse transcription polymerase chain reaction. Severe disease was defined as dyspnea, respiratory frequency ≥30/min, blood oxygen saturation ≤93% on ambient air, partial pressure of arterial oxygen to fraction of inspired oxygen ratio <300, or lung infiltrates involving >50% of lung fields within 24-48 hours. Life-threatening COVID-19 was defined as respiratory failure, septic shock, or multiple organ dysfunction. The cohort included patients admitted from June 1 through November 13. Data were collected retrospectively via chart review by a resident physician. Results In total, our MTF saw 14 cases of severe or life-threatening COVID-19 from June 1 to November 13. Patients had a median age of 70.5 years, with 7% being active duty personnel, 21% dependents, and 71% retired military members. The median time to dexamethasone, remdesivir, and convalescent plasma administration was 4.7, 6.3, and 11.2 hours, respectively. The 28-day in-hospital mortality was 0%. Conclusions Patients who present to an MTF with severe or life-threatening COVID-19 are largely retirees, with only a small fraction comprising active duty personnel. The institution of order sets and early consultation can help facilitate prompt patient care for COVID-19.

Suicide in military settings

Risk factors in the military include firearms, traumatic stress, insufficient social support, and lifestyle. Processes influencing suicide rates within the Armed Forces can be different to that of civilian life, especially when under reformation and economic pressure. Growth of suicides rates in active duty personnel may be noticed in many armies which seems to not only be associated with combat exposure; shifting focus to mental health of recruits. There are two main periods of higher risk—during the first year after recruitment and after leaving the military. Screening of recruits together with resilience training, leadership interventions, gatekeeper training, and firearm regulations are preventive methods. War veterans are also at risk; treatments for post-traumatic stress, depression, and substance abuse, together with social support are suggested. Post-modernity, which implies the role of wider factors associated with changes in the social environment and evolution of meanings and values in the world, is also discussed.

The changing landscape of military medical malpractice: from the Feres Doctrine to present

Medical malpractice suits within the military have historically been limited by the Feres Doctrine, a legal precedent arising from a Supreme Court decision in 1950, which stated that active-duty personnel cannot bring suit for malpractice against either the United States government or military healthcare providers. This precedent has increasingly become a focus of discussion and reform as multiple cases claiming malpractice have been dismissed. Recently, however, the National Defense Authorization Act of 2020 initiated the first change to this precedent by creating an administrative body with the sole purpose of evaluating and settling claims of medical malpractice within the military’s $50 billion healthcare system. This article seeks to present the legal history related to military malpractice and the Feres Doctrine as well as discuss the potential future implications that may arise as the Feres Doctrine is modified for the first time in 70 years.

1180. Seroincidence and Risk of Coccidioidomycosis Infection Among Active Duty Personnel Stationed at Naval Air Station Lemoore in the San Joaquin Valley of California

Background Coccidioidomycosis ranges clinically from a self-limited respiratory illness to multi-organ dissemination. Based largely on skin testing from the 1940s, 60% of infections are thought to be asymptomatic. Limited Coccidioides seroincidence data support our understanding of the epidemiology and pathogenicity of this disease. Methods This retrospective cohort study tested 2000 U.S. military personnel for Coccidioides exposure after transfer to an endemic region of California between 2011 and 2017. The presence of IgG and IgM anti-Coccidioides antibodies were tested on pre- and post-transfer serum samples from the DoD Serum Repository to establish rates of seroconversion. Medical histories and participant demographics including race/ethnicity and military occupational specialty codes were collected from the electronic medical record and participants were stratified by a history of Coccidioides-specific or general respiratory illness based on ICD9/ICD10 coding. Results Thirty of 2000 participants tested newly positive for anti-Coccidioides antibodies after 12 months on station. Seroconversion incidence varied from 0.0-1.32 annually and overall 0.5 per 100 person years. Seroconverters were more frequently diagnosed with coccidioidomycosis or pneumonia than non-converters (p=0.027). No statistically significant association between demographic characteristics and seroconversion or disease was observed. Clinical disease was detected in only three seroconverters (10%). Incidence Rate of Coccidioidomycosis Infection among Active Duty Stationed at NAS Lemoore, 2011-2017 Seroconversion Status by Cocci/Pneumonia Diagnosis Status Conclusion In this study Coccidioides seroincidence was similar to that observed by others, adding longitudinal evidence to epidemiologic assumptions about coccidioidomycosis. A trend toward increasing incidence over the course of the study is consistent with the classification of coccidioidomycosis as an emerging infectious disease. While transmission is typically related to exposure, we did not detect a difference based on military occupational specialty codes. Overall, rates of diagnosed disease in our cohort were lower than the historically-assumed 40% symptomatic rate, although this conclusion is limited by the retrospective nature of the study. Further clinical and epidemiologic coccidioidomycosis research, particularly in broader endemic regions, is warranted. Disclosures All Authors: No reported disclosures

Warriors Wanted: The Performance of Immigrants in the US Army

The US Army offers English-language instruction and socio-cultural training to foreign-born personnel, and current US law allows some immigrants to apply for expedited citizenship through military service. The US Army, thus, offers a compelling context in which to explore how such institutional factors might facilitate immigrant incorporation, yet we know little about the experience of foreign-born soldiers because most surveys exclude active-duty personnel. Using novel data obtained from the US Department of Defense that are not available to the public, this research note describes the integrative nature of the US Army, and contrasts foreign-born and native-born soldiers in relation to what we know about selectivity and immigrant job outcomes elsewhere. We examine rank, promotion likelihood, and retention of newly enlisted citizen and noncitizen immigrant soldiers compared to their native-born counterparts who joined the US Army between 2002 and 2009. We show that immigrants perform equally well or better than native-born soldiers.