DRC: Fighting measles in Ebola-affected areas

Dr. Nicolas Peyraud, a Doctors Without Borders/Médecins Sans Frontières (MSF) vaccination referent, has just returned from several assignments in the Democratic Republic of Congo (DRC), where he helped to set up measles vaccination campaigns in collaboration with UNICEF and the Congolese Ministry of Health. In areas also affected by the Ebola outbreak, providing care for children suffering from with measles and vaccinating those at risk of contracting the disease pose additional challenges for health workers. Here, Dr. Peyraud describes some of those challenges and how MSF has tried to overcome them.

A drastic reduction in routine vaccinations

In an area affected by Ebola, the vast majority of medical resources are mobilized to prevent the spread of the virus and manage suspected or confirmed cases of Ebola. When medical staff and equipment are already limited, epidemiological surveillance and medical care for patients may deteriorate for other diseases such as measles. Similarly, preventive activities, such as routine vaccinations, are drastically reduced. Indeed, measles immunization coverage has declined significantly in Ebola transmission areas since the beginning of the epidemic in mid-2018.

Management of patient care is also a challenge as measles patients and Ebola patients may have similar symptoms (fever, rash, vomiting, or diarhea). This makes triage difficult for the teams in health centers as they are not always trained to correctly identify these two diseases. This can be a significant issue if a measles patient is hospitalized in an Ebola treatment centre (ETC) and vice versa.

Communities can often be reluctant to come to local health centers when they are sick, fearing being identified as suspected to have Ebola and then being isolated. It is therefore very complicated to manage two outbreaks of this scale at the same time, in the same place.

Overcoming the challenges of a “double outbreak”

To avoid the risk of contagion, first we triage at the entrance to the hospital or health center, which allows people suspected to have Ebola to be referred directly to Ebola isolation centers, and measles patients to the dedicated unit. As measles is highly contagious, children hospitalized for measles are also isolated from other patients.

Then, the usual precautions to avoid the transmission of the disease are applied. These precautions, taken by health workers, include strict hand hygiene as well as using clean gloves and disinfecting medical equipment between each use. The same equipment should only be used in the unit where measles patients are isolated. Dedicated medical staff must also be immunized against this virus.

Finally, it is essential that hospitalized patients are assessed daily for any appearance of symptoms resembling Ebola, even if it is burdensome and laborious for the teams.

Conducting a measles vaccination in an Ebola context

In an area of active Ebola transmission, it is essential to put additional infection prevention and control measures in place whenever you have a large group of people gathered in the same location, as is the case with measles vaccination.

At the entrance to a vaccination site, an Ebola screening agent first takes the temperature of each person using a thermoflash (a thermometer that enables a person’s temperature to be taken without physical contact) and questions the accompanying people, asking if they have experienced symptoms such as fever, diarrhea, or vomiting during the last two days. Children and those accompanying [them] are invited to wash their hands. With these measures, the risk of a person with Ebola entering the vaccination site is extremely low.

Then, in the queue, the guardian checks that a certain distance is respected between each child. For each new child, the vaccinator is required to change gloves and wash their hands with a hydro-alcoholic solution. These additional procedures require more time, equipment and human resources, which means additional costs. The vaccination site is also organized differently in order to be able to respect these constraints.