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Sr. number | Author (year) | Objective | Region | Setting | Sample | Period | Outcomes | Results |
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1 | Mathur et al. (2013) [37] | To assess the clinical profile, factors determining the response, prognosis of the disease, and outcome in H1N1 positive patients during 2009-2010 H1N1 pandemic | Jodhpur (West India) | Hospital-based, ICU/isolation patients | Overall population: 221 Pregnant women: 37 | 2009-2010 | Clinical and epidemiological characteristics | Prevalence of Influenza virus: (i) Influenza A (pH1N1): 37 (23.4%) Length of pregnancy at presentation: (i) First trimester: 4 (11%) (ii) Second trimester: 18 (49%) (iii) Third trimester: 15 (40%) Maternal mortality: (i) 26 (70%) pregnant women died (ii) Mortality in third trimester: 80% Treatment: (i) All patients received Oseltamivir, Zanamivir, oxygen and ventilatory therapy, intravenous antibiotics and fluids, low dose steroids, and symptomatic therapy according to WHO guidelines |
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2 | Mehta et al. (2013) [38] | To observe clinical profile of admitted patients with confirmed H1N1 swine flu infection and risk factors associated with the need of mechanical ventilation and/or death | Kochi, Kerala (South India) | Hospital-based inpatient | Overall population: 115 Pregnant women: 6 | August 2009 to December 2011 (28 months) | Clinical and epidemiological characteristic Risk factors associated with mechanical ventilation/death | Influenza virus prevalence: (i) Influenza A (H1N1): 5.2% Maternal mortality: 2 women (33%) Loss of fetus: 2 women (33%) Preterm delivery: 2 women (33%) Treatment: All patients received Oseltamivir 75 mg twice daily for 5–10 days as per CDC guidelines |
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3 | Ramakrishna et al. (2012) [36] | To detail the profile and outcomes of patients admitted to the intensive care unit (ICU) with pandemic Influenza A (H1N1) 2009 virus [P(H1N1)2009v] infection | Bangalore, Vellore, Manipal (South India) | Hospital-based, ICU patients | Overall population: 1902 Pregnant women: 19 | September 2009–December 2009 (4 months) | (i) Hospital mortality (ii) Need for any duration of ventilation, tracheostomy, and skeletal muscle relaxants (iii) Need for renal replacement therapy (iv) Duration of ICU (v) Hospital stay | Onset of infection: (i) Antepartum: 14 women (ii) Postpartum: 5 women Maternal mortality: (i) 10 pregnant/postpartum women (52.6%) died (ii) Other outcomes were not described separately for pregnant women Treatment: All patients received Oseltamivir; no separate mention of timing of initiation of Oseltamivir in pregnant women |
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4 | Gunasekaran (2012) [33] | To determine the cumulative prevalence of H1N1 2009 influenza among pregnant and postpartum women in Tamil Nadu | Chennai (South India) | Hospital-based, inpatient and outpatient | Overall population: 7638 Pregnant women: 126 | September 2009–May 2011 (21 months) | Clinical and epidemiological characteristics | Prevalence of influenza virus: (i) Influenza (pH1N1): 27 women (21.4%) (ii) Influenza A/H3: 12 women (9.5%) (iii) Influenza B: 2 women (1.6%) Onset of infection: (i) Antepartum: 12 women (ii) Postpartum: 15 women ICU admission and complication: (i) Admitted in ICU and treated for severe outcomes: 3 (11.1%) (ii) Admitted in obstetric ward and treated for moderate outcomes: 5 (18.5%) women Maternal mortality: (i) One woman died during postpartum period Treatment: Oseltamivir was initiated in patients considering their high-risk status |
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5 | Pramanick et al. (2011) [34] | To assess the clinical profile of pregnant/puerperal women infected with pandemic H1N1 influenza A and to evaluate their outcome | Vellore (South India) | Hospital-based | Overall population: 566 Pregnant women: 20 | August 2009–January 2010 (6 months) | Primary outcome (i) Maternal mortality Secondary outcomes (ii) Need for ICU admission (iii) Need for mechanical ventilation (iv) Renal failure | (i) Out of 79 pregnant women, 20 (29%) women presenting with ILI/SARI were pregnant Onset of infection: (i) Antepartum: 16 women (80%) (ii) Postpartum: 4 women (20%) Length of pregnancy at presentation: (i) Second trimester: 4 women (20%) (ii) Third trimester: 11 women (55%) (iii) 1 woman had molar pregnancy at 18 weeks of pregnancy ICU admission: (i) Required by 8 pregnant/postpartum (40%) Maternal mortality: 5 women (25%) died Fetal mortality: 1 Complications: (i) Renal failure: 4 women (20%) (ii) Mechanical ventilation: 7 women (35%) (iii) Seizures: 1 woman (5%) Treatment: Oseltamivir received by 18 women (90%); no mention of timing of initiation of Oseltamivir |
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6 | Puvanalingam et al. (2011) [35] | To study clinical profile of H1N1 influenza cases and to study the impact of H1N1 infection on pregnancy outcome | Chennai (South India) | Hospital-based inpatient and outpatient | Overall population: 442 Pregnant women: 12 | August 2009–January 2010 (6 months) | Clinical characteristics and outcome of pregnant women | Length of pregnancy at presentation: (i) First trimester: 2 (16.7%) women (ii) Second trimester: none (iii) Third trimester: 10 (83.3%) women Maternal mortality: 3 women (25%) died Complication: (i) 9 women (75%) presented with pneumonia Fetal death: (i) 2 women (16.7%) had spontaneous abortion following intrauterine death in the third trimester Treatment: not mentioned |
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7 | Chudasama et al. (2010) [32] | To investigated the clinicoepidemiological characteristics of patients who were hospitalized with 2009 pandemic H1N1 influenza virus infection and seasonal influenza in the Saurashtra region of India | Rajkot (West India) | Hospital-based inpatient | Overall population: 773 Pregnant women: 15 | September 2009–February 2010 (6 months) | Clinical and epidemiological characteristics | Length of pregnancy at presentation: (i) All women presented in either 2nd or 3rd trimester ICU admission: (i) 11 women (73.3%) required intensive care Treatment: All patients received Oseltamivir, no separate mention of number of pregnant women that received the drug within 2 days of illness onset |
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8 | Sharma et al. (2010) [39] | To describe the mortality data of severe influenza cases admitted in a tertiary care center in New Delhi | New Delhi (North India) | Hospital-based inpatient | Total: 8 women Pregnant women: 2 | September 2009 to January 2010 (5 months) | Mortality | Out of 8 deaths due to influenza A (pH1N1), 2 women were pregnant Length of pregnancy at presentation: (i) First trimester: one woman (ii) Postpartum period: one woman, child delivered by caesarean section |
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