Hurricane Katrina: What we learned, Then and Now

By Karen DeSalvo, Former Acting Assistant Secretary for Health, U.S. Department of Health and Human Services

This story was published in Ready or Not? 2017.

There are a significant amount of vital lessons that need to and have been learned from the preparation for, response to, and recovery from Hurricane Katrina. One long-term lesson that I think is worth highlighting and has shown its importance during recent weather-related emergencies is the need for public health to take a significant leadership and coordinator role before, during and after an emergency.

In the immediate aftermath of Hurricane Katrina, it was evident that connections were missing—whether it be local public health to state officials, public health to first responders, or public health to the community.

Public health leaders simply weren’t the chief health strategists for their communities. The field was focused on an important set of discrete responsibilities or program but not on the need to build connections with community leaders, first responders and other critical infrastructure that could ensure people had safe places to go and access to medications and other critical supports.

With this realization, it was apparent public health had to connect more with the full gamut of organizations and people involved with an emergency response. And, since then, we have done so not only in New Orleans, but in communities across the country.

For example, during subsequent hurricanes in New Orleans, public health was able to work directly and quickly with hospitals and other care facilities to know if power was on and what beds and medications were available.

And, if you look at the response in Houston, you’ll note that public health was everywhere. They were in communities meeting people and alerting them to potential dangers and infectious diseases, what food and water was safe, etc. And, they were all over social media in a culturally competent way, reaching more and more people.

If you compare the Houston Harvey response to Katrina, it should be apparent that one of the benefits in Houston was the high level of connectedness between public health and the community they serve.

How we can better Prepare for the Next Emergency

In addition to public health continuing to be the coordinator for health for our communities in disaster and every day, to better respond to the next public health emergency, the nation needs to:

  • Expand funding;
  • Improve the foundational capabilities of public health;
  • Better leverage technology;
  • Increase training; and
  • Focus on the underlying health and resiliency of our communities—particularly those who are most vulnerable.

We need more funding for public health—we need public health departments at the local and state levels to have the foundational capabilities required to respond to public health emergencies but also to help build resilience between events.  These funds can’t be categorical, they have to provide core funding that can be nimble for a community to address their biggest health needs. For instance, parts of California might be more prone to wildfires while the Gulf Coast needs to focus on hurricanes. If we don’t have these capabilities in place, we’re forcing our public health workers to just react, rather than prepare to respond.

We also need more funding to go directly to local health departments. States have a huge responsibility during an emergency and often can’t funnel as many resources as you’d think to the local level. During Katrina, we saw this front and center.

While more funding is important, it must be paired with concrete expectations and accountability. Every single health department in the country should be accredited which will help ensure that they can stand up emergency operations when necessary.

When Katrina hit, we were using flip phones, Blackberries and an early version of Google maps. We’ve come a long way with technology in little over a decade, but our preparedness hasn’t quite kept up. We must do better with technology.

We have a great start with this by better leveraging the Department of Health and Human Services’ emPOWER, an online tool that houses and provides Medicare claims data to hospitals, first responders, and health officials to help map the electricity needs during an emergency. emPOWER enables responders to prioritize evacuations and can identify vulnerable populations who will need follow-up services. But it’s limited to the Medicare population.  This type of tool must be expanded to or created for Medicaid and, where appropriate, private payers. First responders and public health must have real-time population level data.

An additional reason more resources are needed is to increase drills and training that specifically focuses on local leadership and the U.S. Public Health Service Commissioned Corps. Annually, public health workers should drill in a vulnerable area alongside the Commissioned Corps—an invaluable resource. Currently, when the Commissioned Corps deploys to an emergency the connections with local responders aren’t there and often the Commissioned Corps can be underutilized.

Lastly, we simply must do more to improve the resiliency of our communities. The healthier a group of people are, the better they respond to an emergency.

In-between emergencies, public health must use data and find opportunities to engage more with vulnerable populations. For example, this could include creating pilot programs with Medicare providers, home health organizations and others involved with the care of older adults. We must improve the health of our older population and, at the same time, have the processes in place that can maintain their connection to care during an emergency that might result in evacuations and/or loss of power.

The nation’s preparedness has improved immensely since Hurricane Katrina—we must keep improving.

New Orleans’ Efforts to Prevent and Respond to Childhood Lead Exposure

Background

In New Orleans, Louisiana, more than 90 percent of housing structures were built prior to 1978 – the year lead was decreased in residential paint – making city residents vulnerable to lead-based paint hazards. In addition to deteriorating paint and the lead contaminated dust it generates, the lead dust from the use of leaded gasoline contributed significantly to elevated soil lead levels.

While leaded gasoline was phased out in the 1970s through the 1990s, the lead dust remains in soil, particularly within transit-heavy areas of the city. Researchers estimate that vehicles deposited more than 10,000 metric tons of lead dust in New Orleans soil between 1950 and 1985. In 2004, more than 40 percent of New Orleans soils exceeded the EPA’s cleanup standard for play areas.

Lead in soil can disproportionally impact children because they are more like to inhale and ingest dust and dirt.

Hurricanes Katrina and Rita

In August, 2005, storm surges from the Hurricanes flooded 80 percent of the homes of New Orleans and deposited massive quantities of low lead sediments into the city. The sediments created a natural barrier on top of the pre-existing high-lead soil establishing a cleaner, less hazardous landscape. This, combined with citywide cleanup and remediation efforts, reduced lead dust in homes and surrounding soil. Lead assessments conducted in Katrina’s immediate aftermath found a 46 percent reduction in median soil lead levels. And the declines continued. Before the storm, 15 of the city’s 46 census tract neighborhoods exceeded the EPA’s regulatory soil lead standards; by 2010, only 6 neighborhoods exceeded standards.

At the same time, there was a decrease in children’s BLL. Prior to the Hurricanes, 50 percent of New Orleans’s children had BLL’s equal or greater that the federal reference value of 5 µg/dL. Ten years after the Hurricanes, about 5 percent of the children’s BLL exceed that exposure value.

Lead-Safe Soil Emplacement Interventions

Inspired by the city’s unique natural experiment, researchers used a similar approach to clean up soil at 10 childcare centers in New Orleans, covering lead-contaminated surface soils with a water-permeable barrier and 6-inch layer of low-lead soil. Since 2005, nine of the 10 federal public housing projects were rebuilt using this process—landscaped with low lead soil to raise the elevation of the housing. This intervention was expanded to all New Orleans’s childcare center play areas and public playgrounds that tested high for lead.

Challenges Remain

These efforts, combined with the potential reduction of lead from fresh topsoil deposited by the storm surge during Hurricane Katrina, led to a decrease in the percentage of children with elevated BLLs in high-lead communities (mainly inner city) from 64 percent in 2005 to 19 percent by 2015. In short, household restoration and cleaning reduced lead-based paint hazards and washed-in sediments reduced soil lead. The remaining challenge is to reduce exposure in high lead communities by conducting more “soil emplacement interventions and continuing lead paint hazard reduction strategies.”

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In August, 2017, the Health Impact Project, a collaboration between the Robert Wood Johnson Foundation (RWJF) and Pew Charitable Trusts released: Ten Policies to Prevent and Respond to Childhood Lead Exposure. The Trust for America’s Health (TFAH), National Center for Healthy Housing (NCHH), Urban Institute, Altarum Institute, Child Trends and many researchers and partners contributed to the report. TFAH and NCHH worked with Pew, RWJF and local advocates and officials to put together the above case study about lead poisoning and prevention initiatives.

The case study does not attempt to capture everything a location is doing on lead, but aims to highlight some of the important work.