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Technology and natural disasters: Surviving the floods in Chennai

Exactly one month ago, I came face to face with the fury of El Niño in Chennai, a sprawling city in India of more than 7 million people. The storms and the floods of December 1 left 1.8 million people displaced from their homes and about 400 dead. I narrowly escaped the floods, thanks to my mobile device and the thoughtfulness of strangers. Now, I have a chance to reflect on how technology has made crowdsourced disaster relief possible, and what lessons healthcare can learn from this.

I was traveling to Chennai on December 1 for my return flight to the US on December 3. I was looking forward to meeting my friends whom I haven’t seen in a decade, and they had promised to show me the culinary delights that the metropolis had to offer. The city had been hit by two tropical storms in November 2015, leaving the land waterlogged and all the reservoirs in the city almost brimming over. Another storm was forecast for December 1, and everyone expected it to be yet another storm which will leave the low lying areas waterlogged, without affecting the rest of the city. Looking back, foresight sometimes seems to be in vain like the best laid plans of mice and men. El Niño had other plans, with the storms bringing down the highest 24-hour rainfall that the city has seen in more than 100 years.

Aerial view of flood hit areas of Chennai and its suburbs taken by Indian Air Force helicoptersOn December 1, I was equipped with two cellphones (one local and one with international roaming, both with internet access), a car charger, an external power bank for the cellphone, and all the usual stuff that an international traveler carries on a two-week trip. The car was not equipped with anything special to handle the elements. We started towards the coastal city of Chennai at around 10AM, and we encountered rain for the first time around 1PM. The downpour got heavier quickly, and as I would find out later, it did not stop for the next 18 hours until we retreated inland. The car was not equipped for adverse weather.

I am not a big user of social media. But at the chiding of my friends, I had installed a few apps on my cellphones – Twitter and Telegram. They used Whatsapp heavily as well, though I hadn’t installed it myself. I was in constant contact with my friends to find a place and time for dinner, since some of them were on call at their hospitals, and it was hard to coordinate everyone’s schedule as it always is. Nevertheless, the constant social media chatter turned out to be the helpline that guided me to avoid the floods. We soon figured that the rains would be worse than expected, and took a rain check (literally) on our dinner plans. Soon after, my friends started providing me weather and road updates to help me avoid the flooded roads. When we were about one hour away from the southern limits of the city, we were diverted by the police to take a detour to the western side of the city since a lake had breached its banks and had flooded the highway a few miles ahead of us. What would otherwise be a two-hour detour turned to be a six-hour detour due to roads being eroded by heavy rains and traffic. My friends told me to avoid certain roads our driver was considering because those roads were flooded and cut off.

When we finally reached the western highway of the city, we were again turned away by the police there, who only permitted buses to enter and prohibited cars due to rising flood levels on the western highway. I have been stranded several times in unfamiliar cities due to bad weather, but this is the first time I couldn’t find a hotel room for the night after trying nearly a dozen of them. Finally, we found a room for the night in a remote location with the help of my family and friends who were helping me via phone and social media.

Water submerged bridges. Photo provided by Indian Air ForceBy late evening on December 1, messages were pouring in on social media about rising flood levels in many parts of the city, people whose houses were flooded asking for help, and people who were willing to accommodate strangers in their houses. As I prepared to lay my head on a warm hotel bed after changing out of wet clothes and shoes around midnight, I was alarmed by TV news announcing that a lake in that district had breached its banks and asked people to evacuate to higher ground. After reassurances from hotel staff that the lake is far away and it will not affect the hotel, I decided to sleep, while feeling sorry that some of the hotel staff were at work even though their houses were flooded.

The next morning, I found that the city was hit by a large natural disaster:

  • Three major rivers that run east to the sea overflew their banks and flooded areas nearby. Surplus water was let off from reservoirs to protect their banks, which in turn worsened the floods in the rivers.
  • My friend who was on call had performed several Cesarean sections overnight, and she was at the hospital for over 36 hours since other doctors couldn’t reach the hospital to relieve her. Her hospital had lost electricity and backup power, and they were doing all they could to support the patients.
  • Some hospitals were manually ventilating the patients due to power failures (both the electric supply and backup generators) and had to either evacuate or move their patients to higher floors.
  • The Hindu, a large national newspaper that has been published since 1878, was not published for the first time on December 2.
  • Most trains were cancelled since the tracks and stations were flooded.
  • The airport was closed since the terminals and runways were flooded.
  • All major highways to the city – on the South, West, and to some extent, the north were cut off from the rest of the city. Many roads were eroded and some bridges failed.
  • The city was physically cut off from the rest of the world. Power supply was cut off in many areas. Internet access, telephone and cellular services were cut off in many areas. Some areas were under 10 to 15 feet of flood water.
  • Many people had turned off their cellphones to conserve the last bit of battery power they had to use for emergencies. Most of my friends who were helping each other through social media were slowly going offline as their batteries ran out.

However, I was reassured of the city’s resilience due to large coordinated as well as crowdsourced disaster relief efforts:

  • #ChennaiRains and #ChennaiFloods on Twitter were trending with people needing rescue, women in labor needing rescue and transportation to hospitals, SOS messages, as well as people offering help, doctors willing to brave the floods to drive to people needing help, and people offering accommodation with food and internet access for strangers and their pets.
  • The National Disaster Relief Force and the military had been pressed into service as soon as the state government realized that the floods were too much for them to handle. The army, navy and air force responded with boats, helicopters, and ground forces, and they helped with airlifts and food drops by the same evening.
  • Many concerned residents of the city, including a couple of film stars, loaded up their SUVs with food and blankets, and were announcing their location to social media. They were driving to people who responded on Twitter and Whatsapp, and were delivering food, water and blankets to people in need.
  • Many people with SUVs were driving to flooded areas, and were transporting people to relief camps.
  • Many doctors and nurses were organizing ad-hoc medical relief camps, and giving away medical help as well as medicines. They self-organized through social media, and people learned about these camps through social media as well. Many non-medical volunteers helped by finding space for the camps, transporting patients to and from these medical camps, managing the crowds, and transporting people to temporary shelters and hospitals.
  • Many people continued to provide flood and road condition updates for the few days, as well as phone numbers and locations of temporary shelters, doctors and medical facilities who were volunteering to help.
  • The military, the police, the public and medical professionals worked very closely with each other, and communicated with each other through social media.
  • Fever, diarrheal diseases and foot infections were the most reported illnesses. Medical professionals were looking out for cases of leptospirosis, dengue or other waterborne illnesses which might emerge later on.
  • Overall, the disaster relief was well coordinated, and some military personnel were quoted as saying that this was the first natural disaster where they saw more volunteers than victims.
  • The relief efforts are nicely summed by in this video by several volunteers from Chennai.

I changed my flights to depart from Bengaluru instead of Chennai. After several detours, I finally made it to Bengaluru safely with the help of technology and tech-savvy strangers.I did the smallest bit I could by tweeting weather and road updates on the highway from Chennai to Bengaluru, which seemed to help some people who tried to take the same road. After returning home, I have been involved in some relief efforts by a group of medical informatics professionals through the use of technology. We are being helped by some other volunteers who set up an instance of Sahana Eden, an open source disaster relief management software that was created in the aftermath of the Indian Ocean tsunami in 2004.

Aerial view of submerged Chennai airport. Photo by Indian Air Force We considered whether any field-usable electronic medical record systems can help to coordinate the medical relief efforts. We decided not to cause any unnecessary burden by introducing a new system in the middle of a relief effort to untrained users who were volunteering to help. Sahana has a module named Vesuvius, which is aimed at medical disaster relief and family reunification. But again, we decided not to introduce this to an untrained volunteer force in the middle of a disaster. We had some experience in coordinating medical relief efforts in the aftermath of the Nepal Earthquake about six months ago, but this time, the local volunteers in Chennai took initiative, organized themselves through social media and handled the situation a lot more than we could have hoped for. There were very few calls for volunteers, and most of them stepped in by themselves.

As I continue to help and coordinate the relief efforts, I learned a few lessons on what trained medical professionals can do. Many of these depend on ubiquitous technology such as cellphones with GPS and internet access. A handful of professionals who coordinate medical relief need to be trained in the use of disaster management, medical relief management and family reunification software, such as Sahana Eden and Sahana Vesuvius. A team that can immediately install, test, validate, train and provide an instance of such software for use is also necessary. On the ground, we need cellular phones or tablet computers along with backup power supply (batteries and portable solar panels).

In each type of natural disaster, we need to prepare for the appropriate relief efforts. For example, after the Nepal Earthquake, our group of medical informatics professionals distributed information pamphlets about how to prevent or treat crush injuries and rhabdomyolysis, in addition to collecting and shipping medical supplies. After Chennai floods, we saw many volunteers trying to prevent or treat waterborne and vector-borne diseases.

Overall, the biggest lesson I have learned by narrowly escaping a 100-year flood and helping to coordinate the relief efforts is that people have a natural tendency to help. Until now, they did not have the means to go out and help. Today, with the ubiquity of cellular internet access and the convenience of social media, they are out in droves to fend off any disaster that Mother Nature can throw at us. In recent times, the youth around the world have been blamed for wasting their time on social media. This past month, they proved that they can put their information sharing and gathering skills to good use, and they can back it up with physically help as well. I must note that other smaller cities such as Cuddalore were equally affected, but the volunteer efforts were delayed there possibly due to lower penetration of social media.

The question left for professionals such as us is “How can we harness such tremendous crowdsourced human will and effort to answer the needs of millions of people under time and resource constraints?” This is the question that I’m now trying to answer as a medical informatics and a medical professional. I hope my lessons and my questions are yours as well and that we find some answers together in the new year.

Senthil K. Nachimuthu, MD, PhD,  Medical Informaticist with 3M Health Information Systems’ Healthcare Data Dictionary (HDD) team.


All photos provided by the Indian Air Force.

The post Technology and natural disasters: Surviving the floods in Chennai appeared first on 3M Inside Angle.

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Senthil Nachimuthu

Senthil K. Nachimuthu, MD PhD has been a member of the 3M HDD team since 2003. He is our research, design and architecture lead and is responsible for new technical and content development. Senthil is active in standards and professional organizations including Health Level 7 (HL7), SNOMED International, and the American Medical Informatics Association (AMIA), and has contributed to the development of various standards such as HL7 Common Terminology Services version 2 (CTS2) and SNOMED CT. He also represents our team in 3M division-wide initiatives, e.g., in the Clinical Advisory Group as the lead for data strategy. In addition to clinical terminologies and ontologies, his research interests include clinical decision support, epidemiology, data mining, machine learning and patient safety, and he collaborates in research at the University of Utah, where he obtained his doctorate in Biomedical Informatics.

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