In 2016 an estimated 5.6 million children died before their fifth birthday. Pneumonia (24%), diarrhoea (15%), and malaria (9%) remain the leading causes of death in children ages 1 – 59 months, and malnutrition is an underlying factor associated with nearly half of under-five deaths. Both pneumonia and malaria are febrile illnesses, and common causes of diarrhoea in children (e.g. rotavirus, Escherichia coli) can also include fever. While all are treatable, the effectiveness of key medicines is currently at risk: resistance to artemisinin-based combination therapies (ACTs) is spreading in South-East Asia and antibiotic resistance is a growing global concern. Efforts to improve child survival and preserve essential medicines currently threatened by resistance require a more effective, integrated response to childhood fever.
Over three-quarters of children seeking care at facilities and in the community in low- and middle-income countries (LMICs) present with fever. The recent scale-up of malaria rapid diagnostic tests, together with decreasing malaria incidence, have resulted in an increasing number of fevers being diagnosed as malaria-negative. Evidence suggests that many non-malarial fevers are not appropriately managed due in part to a lack of diagnostic tools, leading to: inappropriate treatment including overuse and wastage of both malaria medicines and antibiotics; increased spread of antibiotic resistance; and high costs related to the management of drug-resistant patients. Moreover, missed opportunities to effectively treat sick children can result in severe disease (including severe malaria), which is often overlooked and contributes directly to increased child mortality.
Hypoxaemia, or low oxygen saturation in the blood, is a key indicator of severe disease that requires onwards referral and treatment, including oxygen therapy. While screening for hypoxaemia with pulse oximetry is currently recommended at primary health care and is included in the Integrated Management of Childhood Illness (IMCI) guidelines, this is rarely implemented due in large part to a lack of tools adapted for use in these settings in LMICs.
Promising, new pulse oximeters have recently entered the market that are better adapted for primary care use in children in LMIC. Pilot implementation of these devices is now needed in early-adopter countries to lay the foundation for standard use in primary healthcare facilities and to prepare for their widespread scale-up. In addition, multimodal handheld devices which can detect hypoxaemia as well as other vital signs including respiratory rate, non-invasive haemoglobin and temperature are currently being developed and have the potential to improve integrated care at the frontline. If a sustainable market for these tools is established, they also have the ability to support wider connectivity with other health services.