SummaryBackgroundGlobally, a growing number of children and adolescents are left behind when parents migrate. We investigated the effect of parental migration on the health of left behind-children and adolescents in low-income and middle-income countries (LMICs).MethodsFor this systematic review and meta-analysis we searched MEDLINE, Embase, CINAHL, the Cochrane Library, Web of Science, PsychINFO, Global Index Medicus, Scopus, and Popline from inception to April 27, 2017, without language restrictions, for observational studies investigating the effects of parental migration on nutrition, mental health, unintentional injuries, infectious disease, substance use, unprotected sex, early pregnancy, and abuse in left-behind children (aged 0–19 years) in LMICs. We excluded studies in which less than 50% of participants were aged 0–19 years, the mean or median age of participants was more than 19 years, fewer than 50% of parents had migrated for more than 6 months, or the mean or median duration of migration was less than 6 months. We screened studies using systematic review software and extracted summary estimates from published reports independently. The main outcomes were risk and prevalence of health outcomes, including nutrition (stunting, wasting, underweight, overweight and obesity, low birthweight, and anaemia), mental health (depressive disorder, anxiety disorder, conduct disorders, self-harm, and suicide), unintentional injuries, substance use, abuse, and infectious disease. We calculated pooled risk ratios (RRs) and standardised mean differences (SMDs) using random-effects models. This study is registered with PROSPERO, number CRD42017064871.FindingsOur search identified 10 284 records, of which 111 studies were included for analysis, including a total of 264 967 children (n=106 167 left-behind children and adolescents; n=158 800 children and adolescents of non-migrant parents). 91 studies were done in China and focused on effects of internal labour migration. Compared with children of non-migrants, left-behind children had increased risk of depression and higher depression scores (RR 1·52 [95% CI 1·27–1·82]; SMD 0·16 [0·10–0·21]), anxiety (RR 1·85 [1·36–2·53]; SMD 0·18 [0·11–0·26]), suicidal ideation (RR 1·70 [1·28–2·26]), conduct disorder (SMD 0·16 [0·04–0·28]), substance use (RR 1·24 [1·00–1·52]), wasting (RR 1·13 [1·02–1·24]) and stunting (RR 1·12 [1·00–1·26]). No differences were identified between left-behind children and children of non-migrants for other nutrition outcomes, unintentional injury, abuse, or diarrhoea. No studies reported outcomes for other infectious diseases, self-harm, unprotected sex, or early pregnancy. Study quality varied across the included studies, with 43% of studies at high or unclear risk of bias across five or more domains.InterpretationParental migration is detrimental to the health of left-behind children and adolescents, with no evidence of any benefit. Policy makers and health-care professionals need to take action to improve the health of these young people.FundingWellco...

Rapid and potentially irreversible climate change poses a direct threat to global public health. Andrew Harmer and colleagues argue that WHO should recognise this in the same way as global threats from specific diseases

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This paper examines determinants of ethnic disparities in workplace risks of COVID-19 among health and social care workers (HCWs) in the UK. This was undertaken to inform public health policy in the management of COVID-19 relating to health and social care provision. A cross-sectional survey was administered in July-August 2020 (n = 456) to elicit HCWs' experiences of COVID-19 management in the workplace and their perceptions of exposure, personal protection against infection, involvement in local clinical management, and other workplace hazards. Findings suggest minority ethnic HCWs were twice as likely as White HCWs to be in a patient-facing role (OR = 2.14, 95% CI:1.21; 3.78, P < 0.01) and twice as likely (63% vs 39%) to be caring for COVID-19 positive patients (OR = 2.68, 95% CI: 1.77; 4.06, P < 0.01). Those in nursing, were three times as likely to be redeployed to a COVID-19 care setting (OR = 3.33, 95%CI: 1.23; 9.02, P= 0.02). Minority ethnic HCWs within lower-and mid-level roles carried a higher burden of frontline clinical management of COVID-19 positive patients than their White counterparts. This study found evidence of ethnic disparities across several workplace hazards, with increased exposure to and less protection against infection, more responsibility for the clinical management of infection, and evidence of systemic racial bias in the disproportionate redeployment of minority ethnic nursing staff to COVID-19 areas. An NHS-wide review is required to assess procedural fairness, ensure safe practices now, and to avert future crises.

Responses to migration must remain firmly rooted in social justice