Improving Testing for COVID-19 for the Rural Southwestern American Indian Tribes

Arshia Chhabra¹

Varinn Sood²

Vanita Sood, MD³

Akshay Sood, MD, MPH^4,5

¹La Cueva High School, 7801 Wilshire Ave NE, Albuquerque, NM USA

²Albuquerque Academy, 6400 Wyoming Blvd. NE, Albuquerque, NM USA

³Andrew Weil Center for Integrative Medicine, University of Arizona, 655 N Alvernon Way, Tucson, AZ USA;

⁴Department of Internal Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM USA; ⁵Black Lung Program, Miners’ Colfax Medical Center, Raton, NM, USA.

Coronavirus disease 2019 (COVID-19) is caused by the severe acute respiratory syndrome-related coronavirus-2 (SARS–CoV-2) infection. The United States (US) currently has more officially reported cases and deaths from COVID-19 than any other country in the world. The rural Southwestern American Indian (SAI) tribes are disproportionately affected, due to genetics, immunological naivety, social determinants of health, and high prevalence of concomitant comorbidities and co-exposures (1). On March 30, 2020, the New Mexico Governor, Michelle Lujan Grisham, informed the US President Donald Trump of the “incredible spikes” in cases of COVID-19 within the Navajo Nation in the rural Four Corners region of the American Southwest (2). The Governor warned that the disease “... could wipe out those tribal nations.”

Use of COVID-19 testing as an approach to combating the pandemic is supported by an Iceland-based epidemiological study, and endorsed by the World Health Organization (3). Rural states in the US rank higher in prevalence of COVID-19 risk factors (hypertension, obesity, and diabetes), but rank lower in overall testing rates (4). Notably, several Southwestern states such as Arizona, Texas and Oklahoma have among the lowest testing rates in the country (5). Taken together, these results suggest that the current COVID-19 surveillance does not effectively capture medically vulnerable rural populations in the Southwest (4). Testing in the SAI tribal communities is further limited by the following reasons: 1) misinformation on tests due to the lack of broadband Internet access; 2) inadequate access to test sites due to lack of transportation and long travel distances; 3) traditional mistrust of the healthcare system; 4) concern about mishandling of biological samples; 5) misunderstanding that molecular assays interpret the genetic structure of the virus and not their people; 6) difficulty paying for the tests; and 7) nationwide shortage of test kits. Buy-in from community leaders and traditional healers, utilizing culturally sensitive communications, and access to broadband Internet are crucial to improving effective testing-based surveillance in these communities.

A large number of molecular and serological tests for COVID-19 are currently available, many of which lack evaluation data. Molecular tests, useful for establishing a diagnosis, utilize respiratory tract specimens to assess for the presence of nucleic acid targets specific to SARS–CoV-2 using the reverse transcriptase-polymerase chain reaction (RT-PCR) or nucleic acid amplification assays. RT-PCR–based assays performed in the laboratory on nasopharyngeal swabs collected by trained professionals are currently the cornerstone of COVID-19 diagnostic testing. Most RT-PCR assays take a few hours to complete, but the Cepheid assay has shortened the test duration to 45 minutes (6). Recent molecular tests such as CRISPR-Case12-based lateral flow assay and Abbott ID Now™, utilizing isothermal nucleic acid amplification technology for the qualitative detection of viral RNA have shortened the turnaround time further (7). Unlike molecular tests, serological tests may be useful in public health surveillance and vaccine evaluation, but not as the sole test for diagnosing the acute stage of the disease (8). Performed on blood specimens, serological tests use formats such as enzyme-linked immunosorbent assay and rapid lateral flow immunoassay, to detect immunoglobulin M (IgM) and/or immunoglobulin G (IgG) antibodies, which are produced by the body at approximately 10 days and 20 days respectively following COVID-19 infection. Current molecular and serological tests are laboratory-based and not easily available in the SAI tribal settings.

Living far away from hospitals, rural SAI residents need easy access to sample collection venues.  Across the world, many different sample collection venues can serve as useful prototypes, which includes drive-through-, booth-, mobile laboratory-, and home-based approaches. The latter approach involves the use of self-test kits, which are ideal. The approach involves kits containing instructions for testees to self-collect nasal swabs (or possibly early morning salivary specimens (9)) for molecular tests, or finger-stick blood samples for serologic tests. The FDA recently granted emergency clearance to the first at-home molecular test, a nasal self-swab kit (Pixel, LabCorp, USA), with a mail-back to the company laboratory for conducting the PCR assay, with online access to the results (10).

Although not currently available, the ideal test for the SAI tribal settings is low cost, less complex, point of care, rapid (i.e., test turn-around time preferably within an hour), and able to be performed by non-laboratory professionals in low-infrastructure settings, such as homes. The test results could be potentially uploaded to a mobile app or be viewed over a telemedicine consultation to interpret the results and provide immediate counseling on the next step. Smartphone-based devices containing a cartridge-housed microfluidic chip, which carries out isothermal amplification of viral nucleic acids from nasal swab samples in 30 minutes, which are detected using the smartphone camera, may soon be available for home testing (11). Rapid point of care serologic tests, similar to finger-stick blood glucose tests, and home pregnancy tests with colorimetric reading, mal also soon become available for home testing (12).To take advantage of rapid point-of-care testing that will soon become available, improving access to smartphones and broadband Internet in SAI tribal communities is crucial.

The primary goal of the pandemic containment in the rural SAI tribal communities is to reduce the basic reproductive number (R0, the expected number of cases directly generated by one case) of the SARS–CoV-2 virus, thereby reducing disease transmission. Given the lack of effective vaccines or treatments, the only currently available levers to reduce SARS–CoV-2 transmission are to practice social isolation, universal masking, and hand hygiene, identify asymptomatic and symptomatic infected cases through ideal testing strategies, and isolate contagious persons (8). Although not currently available, the ideal test for SAI communities is point of care, rapid, and home-based and requires efforts to improve access to smartphones and broadband Internet. Testing can be popularized using community leaders and traditional indigenous care providers. Finally, policy solutions are needed to eliminate financial barriers for uninsured or underinsured patients, to help meet the goal of improving testing-based COVID-19 surveillance in the rural SAI tribal communities.

References

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Cite as: Chhabra A, Sood V, Sood V, Sood A. Improving testing for COVID-19 for the rural Southwestern American Indian tribes. Southwest J Pulm Crit Care. 2020;20(5):175-8. doi: https://doi.org/10.13175/swjpcc037-20 PDF

Saving Lives or Saving Dollars: The Trump Administration Rescinds Plans to Require Sleep Apnea Testing in Commercial Transportation Operators

In another move favoring business interests and against the common good, the Trump administration’s Department of Transportation announced recently that they are rescinding plans to require testing for obstructive sleep apnea (OSA) in train and commercial motor vehicle operators (1). As exemplified by its withdrawal from the Paris climate accords, this decision is another example of how the current administration disregards scientific findings and present-day events in establishing policy that will be detrimental to Americans.

Let us step back for a moment and briefly review the evidence that the Trump administration has ignored.

• It is well established that obstructive sleep apnea (OSA) can result in daytime sleepiness (2) and that sleepiness is detrimental to safe operation of a train or motor vehicle.
• Many studies have established that persons with OSA have an increased risk of motor vehicle crashes (3).
• Studies in commercial truck drivers have observed that this population has a high prevalence of OSA (4).
• It is estimated that OSA costs the American economy $150 billion annually (5).
• There now are relatively easy and inexpensive protocols to screen high risk individuals for OSA (4).
• Obstructive sleep apnea is a treatable condition, and treatment mitigates OSA impairment in sleepiness and reduces crash risk (6,7). In contrast, non-compliance with treatment is associated with a five-fold increase in crash risk (6).
• The costs of diagnosis and treatment are much lower than the costs that ensue when OSA persists untreated (5). For example, significant healthcare savings result from successful treatment of truck drivers (8).
• Failure to recognize and treat OSA has resulted in several high-profile transportation accidents. The following are some recent incidents:
  • September 2016: A commuter rail train slammed into the station at Hoboken, NJ killing a female bystander and leaving a child without a mother. The engineer had undiagnosed severe OSA (9).
  • December 2013: A Metro North commuter rail engineer fell asleep and his train sped around a curve resulting in a crash that killed 4 and injured 70 (10). The National Transportation Safety Board determined that undiagnosed severe OSA was the probable cause of the accident. The lack of a policy which required sleep disorder screening was further determined to be a contributing factor (11).
  • September 2013: A Greyhound bus overturned on Interstate 70 because the driver fell asleep resulting in multiple injuries. The driver was later found to have untreated OSA (12).
  • June 2009: A tractor-trailer traveling at a high speed did not see stopped cars ahead on Interstate 44 resulting in a crash that killed 10 and injured 6. It was later determined that the truck driver had mild OSA contributing to fatigue (13).

Despite the weight of the aforementioned evidence, the current administration has chosen to ignore it in favor of letting private industry regulate itself implying the current regulations are sufficient. As illustrated by the incidents cited above, recent events have proven them wrong. As Sir Winston Churchill once said “Those who fail to learn from history are doomed to repeat it”. Continuing with the current policy will inevitably result in further preventable disasters and more loss of life.

What can be done? At the federal level, one should consider advocating to your own congressional representatives for reconsideration of this poorly considered policy. On a personal level, federal policy is ultimately guided by the “ballot box”, which is something to consider for the next election. Finally, be aware that the next time you are driving down the interstate, the truck or bus driver approaching you from behind may have untreated OSA!

Stuart F. Quan, M.D.^1,2, Laura K. Barger, Ph.D.¹, Matthew D. Weaver, Ph.D.¹, and Charles A. Czeisler, Ph.D., M.D.¹

¹Division of Sleep and Circadian Disorders

Brigham and Women’s Hospital

Harvard Medical School, Boston, MA USA

²Asthma and Airway Disease Research Center

University of Arizona College of Medicine

Tucson, AZ USA

References

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9. Anonymous Hoboken train crash investigation hampered by heavy damage. CBS News. 2016; Available at: http://www.cbsnews.com/news/hoboken-train-crash-investigation-hampered-heavy-damage/ (Accessed: August 15, 2017)
10. Anonymous. December 2013 Spuyten Duyvil derailment. Last updated: 2017. Available at: https://en.wikipedia.org/wiki/December_2013_Spuyten_Duyvil_derailment (Accessed: August 10 , 2017)
11. National Transportation Safety Board. ​Metro-North Railroad Derailment. Last updated: 2014. Available at: https://www.ntsb.gov/investigations/AccidentReports/Pages/RAB1412.aspx (Accessed: August 15, 2017)
12. Lee D.  Sleep Test Leads to $6M Greyhound Settlement. Last updated: 2016. Available at: http://oldarchives.courthousenews.com/2016/03/09/sleep-test-leads-to-6m-greyhound-settlement.htm (Accessed: March 9, 2017)
13. National Transportation Safety Board. Highway Accident Report: Truck‐Tractor Semitrailer Rear‐End Collision Into Passenger Vehicles on Interstate 44 Near Miami, Oklahoma June 26, 2009. Last updated: 2010. Available at: https://www.ntsb.gov/investigations/AccidentReports/Reports/HAR1002.pdf (Accessed: August 10, 2017)

Cite as: Quan SF, Barger LK, Weaver MD, Czeisler CA. Saving lives or saving dollars: The Trump administration rescinds plans to require sleep apnea testing in commercial transportation operators. Southwest J Pulm Crit Care. 2017;15:84-6. doi: https://doi.org/10.13175/swjpcc102-17 PDF 

Disclosures 

Editor's note: In 2016 Dr. Quan authored an editorial titled "Screening for Obstructive Sleep Apnea in the Transportation Industry—The Time is Now" in SWJPCC. The editorial encouraged screeening of transportation workers for sleep apnea.